OMG Makari has An Imperial Guard List

Company Command Squad
- Commander Power Weapon Carapace on all
- Veteran Medipack
- Regimental Standard
-Meltagun x2
-Nork Deddog
-Master of Ordinance

Primaris Psyker

10 Psyker Battle Squad
-Chimera w/ Heavy Flamers

Penal Legion Squad

Veteran Squad
-Sgt. Power Fist, Bolt Pistol
-Melta Guns x 3
-Demolitions

Valkyries x2
-Lascannon
-Heavy Bolters

Infantry Platoon
*Platoon Command Squad
-Mortar
-Squad 1
-Squad 2
*Heavy Weapons Squads
-Squad 1: 3 Heavy Bolters
-Squad 2: 3 Missile Launchers
-Squad 3: 3 Lascannons

2 Leman Russ Battle Tanks

I really wanna see how this plays out...

What are your plans for the valkyries?

my only thought would be is that your are light on units, if anything with a good amount of firepower comes along it could reduce your effectiveness failry quickly, besides that it looks like a good list