One thing to remember at low points is that your troops will be the biggest targets since you will have so few.
Personally I don't run Tervigons, I understand their use but I don't want that.
At 750 I would run this
Hive Tyrant, norn crown, HVC, STC, Go for pyschic lynchpin and get dominion as a psychic power giving you a 30" synapse range.
3 warriors 1 Venom Cannon
3 Warriors 1 Venom Cannon
This gives you 5 troops choices, layered synapse, 2 venom cannons and a HVC and a STC for dual roles of killing tanks and killing large squads of troops, two squads of termagants to run behind your 30 man wall of hormagaunts.
With any luck you will run them up and people will be so worried about the hormagaunts they don't even pay attention to your other 4 troops for at least a turns worth of shooting.
Szarekh, the Silent King
in my mind.
Don't worry you foul little creature, I have no intention of killing you today. Come stand next to me and watch your world burn and understand the meaning of the word futility.
My Tyranid Log