2000 pnts Tourney: 3 Flyrants?

[innocent]

Heya.

So I took first place (Generalship, 3rd overall) at our last tournament using a dual Flyrants list I'll be going to another tourney soon, 2000pnts, 2x FOC, and I'm a bit undecided on 3 lists.

First List
HQ
- Tyrant, Wings, 2x TL Devourers, Old Adversary, 285pnts
- Tyrant, Wings, 2x TL Devourers, Old Adversary, 285pnts
- Tyrant, Wings, 2x TL Devourers, Old Adversary, Hive Commander, 310pnts
ELITE
- 3 Hive Guards, 150pnts
- 3 Hive Guards, 150pnts
TROOPS
- Tervigon, Catalyst, Toxin Sacs, Adrenal Glands, 195pnts
- Tervigon, Catalyst, Toxin Sacs, Adrenal Glands, 195pnts
- Tervigon, Catalyst, Toxin Sacs, 185pnts
- 11 Termagants, 55pnts
- 10 Termagants, 50pnts
- 10 Termagants, 50pnts
HEAVY SUPPORT
- 2 Biovores, 90pnts

I'm concerned that the Flyrants are my only forward elements. If needed I can Outflank a Tervigon though. I like Biovores but I'm concerned they will give away easy kill points.

Second List:
Same as above, but drop the Biovores and get Regeneration on the Flyrants and more goodies on the Tervigons. I'm dropping bodies, so not great, but considering the Flyrants will take a lot of flakk I'm thinking it could be good. Does anyone have experience with Regeneration on Flyrants?

Third List:
HQ
- Tyrant, Wings, 2x TL Devourers, Old Adversary, 285pnts
- Tyrant, Wings, 2x TL Devourers, Old Adversary, Hive Commander, 310pnts
ELITE
- 3 Hive Guards, 150pnts
- 3 Hive Guards, 150pnts
- 8 Ymgarls, 184pnts
TROOPS
- Tervigon, Catalyst, Toxin Sacs, Adrenal Glands, 195pnts
- Tervigon, Catalyst, Toxin Sacs, Adrenal Glands, 195pnts
- Tervigon, Catalyst, Toxin Sacs, Adrenal Glands, 195pnts
- 10 Termagants, 50pnts
- 10 Termagants, 50pnts
- 10 Termagants, 50pnts
HEAVY SUPPORT
- 3 Biovores, 135pnts
FAST ATTACK
- 3 Spore mines, 30pnts
- 3 Spore mines, 30pnts

First I'll explain the spore mines: they deep strike behind Aegis lines, possibly close to a Quad Gun, and piss my opponent off for a turn I can also deep strike them in the piece of terrain where I plan to hide my Ymgarls to make sure my opponent does not block it with models. If you think it's silly I don't mind dropping them but don't know what for The rest is a pretty balanced list, with the Flyrants and Ymgarls as forward elements and Tervigons capping objectives. The Biovores are gravy on top.

I have a preference for the first 2 lists, the Flyrants can dish out such a huge amount of damage and practically single handedly won me the last tourney. But I'm a bit worried that relying purely on Flyrants for attack is a mistake. Does anyone have experience with a similar list?

C&C welcome.