Hey guys! Just started up the new Nids

I've been waiting patiently for these bugs and have a bit of an emotional attachment to them (Big Zerg fan, Big Aliens Movie fan, etc) but whatever. Currently the models I own are the one from the Swarm pack! Bunch of Termagants, Hormagants, Carnifex, Gargoyles, and my lovely Hive Tyrant!
Would I be able to ask for some input on the best way to run my bugs in a lower point game? Anywhere from 500-700. G