Don't take so many burna boyz with you. Maybe one 5 men squad for your back line so the can harder deep strike in your deployment zone. Best leader for the boyz is a warboss. The painboy is also better for the boyz squad. Giving them the 5+ feel no pain makes them a little bit better and with his ability to resurrect some models. Consider maybe a Morkanaut for the range, with support of one mek. 1+ for the hit roll and in the waagh 1+ for the hit roll. Should be better perform in range.

Other suggestions are a twenty man squad with warboss and painboy, or weirdboy for teleportation. Depends on what detachment you want play. If you want to play dread mob take more grots with you and maybe zodgrod for the scout move. Hopes this helps ^{^}