500 point infantry list

thought id try out a 500 point list. i think i've given my command squads too many upgrades could somebody help me cut them down a bit so i can cram yet more infantry into the list. basic plan is to drown the enemy in bodies using the lascannon armed veteran squad to pick off transport tanks. i'd also like to include a armoured sentinel to keep up with the infantry or a heavy weapons squad with any points left over...

Company command squad
Bolt pistol
Regimental standard
Vox-caster
Melta-gun
Plasma gun
97 pts.

Platoon command squad
4 melta guns
Power fist
85 pts.

Infantry squad
Grenade launcher
55 pts.

Infantry squad
Grenade launcher
55 pts.

Infantry squad
Grenade launcher
55 pts.

Infantry squad
Grenade launcher
55 pts.

Veteran squad
Lascannon
90 pts.
basic plan is to form the infantry platoon into 1 or 2 if im really bored combined squads that race as fast possible towards the enemy line with the platoon command squad and the company command squad whilst the veterans kill enemy transport tanks...