If I were to tke a 2000pt army

I would take this list I think. I tend to like a balanced list vs a specialized list. this list does have allies and I think it covers the ability to take objectives. the learning curve for this eddition seems steep to me. I would like your opinion on this list.

2000 Pts - Imperial Guard Roster/sister of battle

HQ: Primaris Psyker (1#, 70 pts)
1 Primaris Psyker, 70 pts (Infantry; Psyker (1); Assault Grenades; Flak Armour; Refractor Field; Force Weapon; Laspistol; Independent Character; It's For Your Own Good; Warlord; Lightning Arc; Nightshroud)

Troops: Veteran Squad (11#, 160 pts)
7 Veteran Squad, 160 pts (Infantry; Assault Grenades; Flak Armour; Krak Grenades; Close Combat Weapon x7; Lasgun x4; Flamer x1; Grenade Launcher x2)
1 Veteran Heavy Weapon Team (Autocannon; Assault Grenades; Close Combat Weapon x1; Flak Armour; Lasgun x1; Krak Grenades)
1 Veteran Sergeant (Character; Assault Grenades; Flak Armour; Krak Grenades; Laspistol; Close Combat Weapon)
1 Chimera (Vehicle (Tank, Transport); 12 model capacity; Heavy Bolter; Searchlight; Smoke Launchers; Turret Multi-Laser; Pintle Storm Bolter; Amphibious; Mobile Command Vehicle)

Troops: Veteran Squad (11#, 225 pts)
1 Vendetta Gunship Squadron, 130 pts (Deep Strike; Grav Chute Insertion; Scout)
1 Vendetta (Vehicle (Flyer w/Hover mode, Transport); 12 model capacity; Extra Armor; Searchlight; Twin-linked Lascannon x3; Skyfire)
9 Veteran Squad, 95 pts (Infantry; Assault Grenades; Flak Armour; Krak Grenades; Close Combat Weapon x9; Lasgun x6; Flamer x1; Meltagun x2)
1 Veteran Sergeant (Character; Assault Grenades; Flak Armour; Krak Grenades; Laspistol; Close Combat Weapon)

Troops: Veteran Squad (11#, 225 pts)
1 Valkyrie Assault Carrier Squadron, 140 pts (Deep Strike; Grav Chute Insertion; Scout)
1 Valkyrie (Vehicle (Flyer w/Hover mode, Transport); 12 model capacity; Extra Armor; Searchlight; Multilaser; Multiple Rocket Pods x2; Heavy Bolter Sponsons x2; Skyfire)
9 Veteran Squad, 85 pts (Infantry; Assault Grenades; Flak Armour; Krak Grenades; Close Combat Weapon x9; Lasgun x6; Flamer x1; Grenade Launcher x2)
1 Veteran Sergeant (Character; Assault Grenades; Flak Armour; Krak Grenades; Laspistol; Close Combat Weapon)

Troops: Infantry Platoon (27#, 300 pts)
1 Infantry Platoon, 300 pts
2 Platoon Command Squad (Infantry; Assault Grenades; Flak Armour; Close Combat Weapon x2; Sniper Rifle x2)
1 Heavy Weapons Team (Lascannon; Assault Grenades; Close Combat Weapon x1; Flak Armour; Lasgun x1)
1 Platoon Commander (Character; Assault Grenades; Flak Armour; Laspistol; Close Combat Weapon; Junior Officer)
7 Infantry Squad (Infantry; Assault Grenades; Close Combat Weapon x7; Flak Armour; Lasgun x6; Flamer x1; Combined Squad)
1 Heavy Weapons Team (Heavy Bolter; Assault Grenades; Close Combat Weapon x1; Flak Armour; Lasgun x1)
1 Sergeant (Character; Assault Grenades; Flak Armour; Laspistol; Close Combat Weapon)
1 Chimera (Vehicle (Tank, Transport); 12 model capacity; Searchlight; Smoke Launchers; Turret Multi-Laser; Heavy Flamer; Amphibious; Mobile Command Vehicle)
7 Infantry Squad (Infantry; Assault Grenades; Close Combat Weapon x7; Flak Armour; Lasgun x6; Flamer x1; Combined Squad)
1 Heavy Weapons Team (Heavy Bolter; Assault Grenades; Close Combat Weapon x1; Flak Armour; Lasgun x1)
1 Sergeant (Character; Assault Grenades; Flak Armour; Laspistol; Close Combat Weapon)
1 Chimera (Vehicle (Tank, Transport); 12 model capacity; Searchlight; Smoke Launchers; Turret Multi-Laser; Heavy Flamer; Amphibious; Mobile Command Vehicle)

Fast Attack: Scout Sentinel Squadron (1#, 35 pts)
1 Scout Sentinel Squadron, 35 pts
1 Scout Sentinel (Vehicle (Open-topped, Walker); Multilaser x1; Move Through Cover; Scout)

Heavy Support: Leman Russ Squadron (2#, 450 pts)
1 Leman Russ Squadron, 450 pts
1 Leman Russ Executioner (Vehicle (Tank); Executioner Plasma Cannon; Searchlight; Smoke Launchers; Lascannon; Heavy Bolter Sponsons x2; Lumbering Behemoth)
1 Leman Russ Executioner (Vehicle (Tank); Executioner Plasma Cannon; Searchlight; Smoke Launchers; Lascannon; Heavy Bolter Sponsons x2; Lumbering Behemoth)

Heavy Support: Ordnance Battery (1#, 85 pts)
1 Ordnance Battery, 85 pts
1 Griffon (Vehicle (Open-topped, Tank); Griffon Heavy Mortar; Heavy Bolter; Searchlight; Smoke Launchers; Pintle Storm Bolter; Accurate Bombardment)

HQ: Saint Celestine (1#, 115 pts)
1 Saint Celestine (HQ) [SoB], 115 pts (Jump Units (Character); Armour of St. Katherine; Assault Grenades; Jump Pack; Krak Grenades; The Ardent Blade; Acts of Faith; Fearless; Independent Character; Miraculous Intervention; Shield of Faith)

Troops: Battle Sister Squad (11#, 190 pts)
9 Battle Sister Squad (Troops) [SoB], 190 pts (Infantry; Assault Grenades; Krak Grenades; Power Armour; Bolt Pistol x9; Boltgun x7; Meltagun x1; Multi-melta; Acts of Faith; Light of the Emperor; Shield of Faith)
1 Sister Superior [SoB] (Assault Grenades; Krak Grenades; Power Armour; Boltgun; Power Sword x1; Acts of Faith; Light of the Emperor; Shield of Faith)
1 Rhino [SoB] (Vehicle (Tank, Transport); 10 model capacity; Smoke Launchers; Storm Bolter; Repair; Shield of Faith)

Heavy Support: Exorcist (1#, 145 pts)
1 Exorcist (Heavy) [SoB], 145 pts (Vehicle (Tank); Smoke Launchers; Storm Bolter; Exorcist Missile Launcher; Shield of Faith)

Ok yup that looks painful lol, the only thing I would suggest is don't put your russ' in a squadron field them separate that way they both can target separate targets or the same one since you have the extra HS slots, also it will give you an extra unit to capture in "big guns never tire"

splitting the russ s up into seperate unit might work better.

I believe so, then you can target different targets and with those tanks they do enough damage on their own if they end up hitting, I use the marine version often and they've done their share of damage lol