First of all, welcome to 6th! Also, I have a question. How competitive does your local group play? Is there a high prevalence of netlists and tournament-style play, or is it more relaxed?
In general the list looks pretty good. I do have some small issues to bring up though.
First of all, you've miscalculated the point cost on your flyrant- he's actually 10 points more than you have listed there. The other issue I'd like to raise depends on whether you're likely to be playing in a competitive environment or not, so I'll spell out both sides of the argument in brief.
If you're playing in a highly competitive environment, it's very difficult to justify making a flyrant into a close combat fighter. Thanks to GW's insistence that one of the most well known close combat armies in 40K not be allowed to take assault grenades across most of the list, you'll find assaults troubling to say the least. This is less of an issue, admittedly, on a flyrant, but nevertheless you'll find him struggle to make back his rather exorbitant point cost in close combat. If kitted out with two pairs of brainleech devourers he becomes much more dangerous, quite frankly. However, if you don't intend to play this list against die-hard tourneyheads (and if you didn't, who could blame you?) and would much prefer your big stompy monster model get in and do some damage up close, then more power to you.
Close combat warriors are a tricky proposition now, particularly if they are intended to be offensive. I personally have had great success using a brood of warriors with Lash whip and bonesword in a mycetic spore as an objective grabber. This works well because they can take a charge and do some monster damage, even without toxin sacs. However, once again the lack of defensive grenades works very much against you. If you were to swap the paired swords for LW and bonesword you would get to experience the heady joy of striking at the same time as your opponents in close combat, instead of going last (huzzah). Again, if you're not running in a highly competitive environment it's probably slightly less of a problem, but as you can't rely on giving them Feel No Pain I think you're going to find the close assault warriors a little disappointing.
If you're going to use the genestealers in that role (and these days that's more or less the only role they're of any use at), you are DEFINITELY going to need more warm bodies.
The shrikes are going to have roughly the same issue as the footslogging combat warriors, made worse by their crappy armour save.