your spending too many points for allies that cant score or deny. Now thats not saying Orks are bad allies for us, infact they can bring alot to the table. But you have to make it a ton cheaper.
Your best bet by that is taking Nob Bikers. They cover your 1 HQ 1 Troop minimal (warboss on bike + squad) and their multi-wound T5 4+ coversave FNP makes them really survivable. Add in a nice mix of power klaws and big choppas, and you got yourself a sturdy, fast, hard hitting unit. Way better than two squads of slugga boys that are doing nothing but wasting space...