my way to play was a kabal army. with a venom you can do 12 shots at 36", 17 at 24", and thats as close as youd ever want to be. some ravagers for lances, trueborns with blasters and venoms.
i see it as you have 3 choices, kabal (range), wyches (combat), or haemonculi armies, and you can mix and match from there.
know how you want to play, and people can help you from there. we cant tell if you want to only shoot, mostly shoot, kill them in combat. this army is as people say a 'glass hammer'. hits hard but breaks easily. so think about what style youd like to use, look over some list in the list section, and get back to this topic. then we can help more with how to use them.
DIVTIVS VOS OBTVTVS IN CASSVS, PENITVS CASSVS OBTVTVS IN VOS.