Hey guys. I'm brand new to the hobby - haven't bought any models yet - but I wanted to see if I could throw together a Tyranid 'core army' as a thought experiment. I understand Tyranids are pretty hard to run for less than 1,000, but let me know if this line-up is significantly missing anything. (My biggest concern is that, without anything really awesome in close combat, I'll tie my opponents up with my swarms and then not have anything with which to finish them off. Genestealers seem the obvious choice, but I'm not sure what to drop.)
HQ
3x Tyranid Warrior - Enhanced Senses, Toxin Sacs, Rending Claws
2x Deathspitter
1x Venom Cannon
TROOPS
9x Termagant w/ Spinefists
8x Termagant w/ Fleshborer
9x Hormagaunt
9x Hormagaunt
3x Ripper Swarm
HEAVY SUPPORT
1x Zoanthrope, Warp Blast, Synapse Creature
115+54+56+90+90+30+65 = 500 points exact