Hey gang. I've wanted a Tyranid army for 30+ years now, and after a long hiatus from
40k, I'm finally collecting one (and salivating over painting it). That said, I could use a bit of feedback on how to round out a list for competitive play. The base list is going to be pretty set, I'd really like opinions and feedback on the last bits of units, and how you feel they'd help or hurt.
The base list. This can be either an Invasion Swarm for versatility, or a Crusher Stampede for a bit of extra punch:
Neurotyrant (Warlord, just...generally useful, and cheap)
Winged Tyranid Prime
10 Gargoyles (sitting on the Home Objective, spread out to prevent Reserves from entering)
Winged Tyranid Prime
10 Gargoyles (for Deep-Striking or general usefulness with 21 OC and movement shenanigans)
Norn Emissary (pick an objective and go stand on it)
Norn Emissary (ditto)
Maleceptor (see below for notes)
Maleceptor
Screamer-Killer
Screamer-Killer (these 4 units are to literally ram down my opponent's gullet, hopefully all at once, and force them to deal with the T, W, and Saves, plus
BS tests. They can also do a lot of damage)
Lictor (Infiltrate/Scout blocker, plus LoneOp for those shenanigans)
Lictor (ditto)
3 Von Ryan's Leapers (useful as additional Lictors, but also to set up near the Norns for free Heroic Interventions)
3 Von Ryan's Leapers (ditto)
Biovore (because apparently Tyranid can't win without one, and I own one.

)
With Perfectly Adapted on the Neurotyrant, that's right at 1880 points. I love the models, I own most of them and am just filling out the collection. It leaves me 120 points. Would you take:
2x10 Termagants with Devourers be a general PITA, screen, do chip damage against things (Invasion Fleet with Sustained Fire 1 or Lethal Wounds), OR,
Dump 3 Von Ryan's Leapers (

) and Perfectly Adapted (meh) for 1 Tyrannofex with a Rupture Cannon to bring in on Turn 2-3 with a beautiful
LoS to something important, possibly in a 1995-point Crusher Stampede? I'd have to buy the Tyrannofex, but they're typically $55 on a lot of websites, so it's not a huge burden.
I'll likely end up with the Tyrannofex anyway (I have other theoretical lists to play with), but I'm curious as to the Hive Mind's thoughts on the list in general and what you'd round it out with if it was yours.
Thanks in advance for responses.