first off, do you know what type of
de list you opponent usually runs?
Ok, it's going to hurt to hear this, but your chances of survival are not good (unless your opponent is no good with
DE). The gene stealers will bit be fast enough to catch anything, and with a save of 5+ they will be eaten alive by splinter fire. So if you have the models a large group of hormagaunts may be better, faster, and will have more survivability.
As for the elites, that's a mess. Zoeys are very unreliable, and really what do you need
str 10 lance for anyways? Hive guards, 3, 4, even six need to be in that list. Hide them behind something solid, put some slugs into venoms as the approach. Also, against
de, your going to want a venomthrope. Cover save, think about it. You'll be hammered with so much rifle fire in your troops you'll want that save. And the
str 8 ap2 lance, will decimate that flyrant, hiveguard (that you should use) you'll want the cover.
If it were me I would run a footslogging tyrant, with guards, 2+ save, and prime. Heavy venom cannon (open topped

get some lashwhips, and remember that gaurds will confer cover to the tyrant. Some guards, a venomthrope, lots of guants, those awesome tervigons, and trygon like you have them
I like the heavys, the 2 primes will give so ravagers a run for thier money.