Genestealer Cult "Counts as" ideas

[J.MorganKuberry]

Hello,
I mostly just paint and collect, but I'm thinking of upgrading my 2nd edition Tyranids and Genestealer cult to fit into the current IG codex to start playing locally. I always meant to play Genestealer Cult when I was younger, and now its too late! Anyways, these are the sort of proxies I'm thinking of, some are straightforward, but does anyone here think this army would be too confusing for an opponent? Would it swing ok at a lower level tournament?

Magus- Primaris Psyker

5 Tyranids with Deathspitters - Ogryns with RIpper Guns

25 rabid cultists with lasguns and such - Infantry Platoon (these would probably just be a mix of purple and blue painted old pewter guardsmen anyways)

10 Genestealer Hybrids - Veteran Squad with carapace armor

Plus some Imperial Guard vehicles painted in culty-looking colors

I'm mostly worried about someone pitching a fit about the Tyranid Warriors, but on the other hand, I need them to soak up some points. Also, any suggestions for other good proxy units would be appreciated. I can't think of any good logical way to include purestrain genestealers or a patriarch, but I'm thinking of making up some cultists on horseback for Rough Riders like in the original Rogue Trader rules. I'm thinking 1500 or so points is a reasonable goal, I assume that's still fairly common for tournament play.

[spiralingcadaver]

With the advent of 6th and allies on the horizon, it seems like a warboss and some boyz and nobz might be a good way to represent some of the more tyranid elements...

Carapace vets would be the hardest for me to buy-- I think that rough riders would be a good match: fast, high initiative, strong attacks, die to a stiff breeze.

[J.MorganKuberry]

Why is that exactly? I'm trying to find a good role for the hybrids, and they wore carapace or mesh armor back in the early versions of the game, bith if which were better than flak armor back then.

[spiralingcadaver]

Oh, my bad, I thought you meant straight genestealers (should read closer). Yeah, carapace vets makes sense.

[THEFAN]

Must have a limo!!!

[J.MorganKuberry]

Yes, I do want to include a Limo-as-Chimera, but I can't figure out how to model it well.

[don_mondo]

I'm hoping the new CSM codex will allow me to field my GS Cult army as a stand-alone army.