Tyranid lists

For the Bloomington tournament this coming weekend I've been thinking of possible lists. They are running the event at 1850.

First Idea is T6 spam

Hive Tyrant; Old Adversary, bonesword lashwhip, Scything talons, Wings
255
Hive guard x2
100
Hive guard x2
100
Tervigon; adrenal glands, toxin sacs, catalyst, stinger salvo
195
Termagaunts x10
50
Tervigon; adrenal glands, toxin sacs, catalyst, stinger salvo
195
Termagaunts x10
50
Gargoyles x10; adrenal glands, toxin sacs
80
Gargoyles x10; adrenal glands, toxin sacs
80
Tyrannofex; rupture cannon, cluster spines, desiccator larvae
265
Tyrannofex; rupture cannon, cluster spines, desiccator larvae
265
Trygon; adrenal glands
210

That's 46 T6 wounds. But really it doesn't do much more than that.

The other option I'm looking at is this

Alpha warrior; bonesword lashwhip, scything talons, adrenal glands and toxin sacs
115
Ymgarl stealers x10
230
Hive guard x2
100
Hive guard x2
100
Warriors x6; Deathspitters, barbed strangler, scything talons
215
Hormagaunts x15; adrenal glands
120
Tervigon; adrenal glands, toxin sacs, catalyst, stinger salvo
195
Termagaunts x12
60

Gene stealers x10
140
Gene stealers x10
140
Raveners x5; scything talons, rending claws
175
Mawloc
170
Biovores x2
90

This one has a good amount of flexibility. Though I still would need to test it.
What are your thoughts?