I'd make the first warrior squad just like your second one exept add wings to the second one and +1 Enhanced Senses to both squads. Move these up with your Termagaunts and Hormagaunts for Synapse.-Warriors (3)
Scything talons (3), Rending Claws(2), Winged, Venom Cannon, Symbiote Rippers
-Frag Mines (3)
Scything Talons(3), Deathspitter(2), Venom Cannon.
Move the Zoanthrope for Synapse for all your gaunts.-Zoanthrope
Synapse Creature, Warp Blast
Enhanced Senses, Barbed Strangler, Scything Talons
Bio Acid Spore Mines
I'd take out Scything Talons for Venom Cannon.
I personally don't like Biovore's but thats a personal preference. If you want it then keep it but i'd take it out for spending points in other areas.
These are good but your Genestealers are a little low on numbers. If you took out the Biovore i'd spend the points on beafing the genestealers.20 Spinegaunts