Your list looks ok, but here is what I would drop:
HQ -137
Company Command 50
Bolt Gun 2
Vox Caster 5
Missile Launcher 15
Melta 10
Chimera Transport 55
Troop 1-222
Veteran Squad 70
Bolt Pistol 2
Vox Caster 5
Plasma Gun x2 30
Lascannon 20
Melta 10
Grenadiers 30
Chimera 55
Troop 2 - 489
Platoon Command 30
Bolt Pistol 2
Medi pack 30
Platoon Standard 15
Vox Caster 15
Plasma Gun 15
Infantry Squad 50
Commisar 35
Lascannon 20
Flamer x2 10 You can only have 1 Special Weapon per squad
Infantry Squad 50
Vox Caster 5
Autocannon 10
Grenade Launcher 5
Infantry Squad 50
Bolt Pistol 2
Vox Caster 5
Autocannon 10
Chimera 55
Heavy Weapons 60
Autocannon x3 15
Fast Attack - 280
Hellhound x2 260
Dozer Blade x2 20
Heavy Support -370
Leman Russ Battletank x2 300
Lascannon x2 30
Heavy Bolter Sponsons x2 40
Army Total 1498
This gives you 123 points to use. I would add 3 more Melta to the Company Command and use them as a mobile tank hunting group, and add another Plasma gun to the Veterans. It might be worth dropping the Lascannons from the
LRBT and having a Heavy Flamer or Bolter instead and make them focus on Anti-Infantry.