Experienced Guard player here. I hope to give you some good advice. Let me know if something doest make sense.
Command HQ - Standard, Master of the Fleet - 95
This is lacking, your wasting BS 4 here big time. If you want a cheap way to use it, pack some grenade launchers.
Troops
Infantry Platoon - 355
1 Plt Command Sqd - (30)
5 Infantry Sqds - Plasma Gun - (65x5)
Infantry Platoon - 290
1 Plt Command Sqd - (30)
4 Infantry Sqds - Plasma Gun - (65x4)
i'm not a fan of line guard at all but giving you PCS flamers can really keep enemies at the distance you prefer. You really should consider veterans. Upgrading the BS of your shooty army is like putting spikes on a bat, totally worth the investment.
Fast Attack
3 Vendetta Gunships - Heavy Bolters - 420 (140x3)
Vendettas may be the most powerful unit in the game right now. Feel free to pack some shock troops in them. Maybe some PCS carrying 4 flamers, that way you can stop the charge or orks/nids before they reach your lines. Remove the heavy bolters, they are completly pointless on a vendetta. Lascannons and HBs have no target in common, if you fire at tanks, the HBs are wasted, just put some HBs in your squads if you want them badly.
Heavy Support
Leman Russ Annihilator - Meltacannons, Lascannon, Knight Commander Pask - 250
What the heck is a LR annihilator? The only russ varients worth it are executioner/demo/vanilla.
2 Leman Russ Demolishers - Plasmacannons, Lascannons - 440 (220x2)
These are actually awesome, depending on what your first russ is, you may not need the plasma cannons here as they are overkill. I run two demos and a executions with plasma cannons, exe fires at terminators and demos fire at tanks.1850[/quote]