Who to start? Ngata or Cole?

I drafted Cole, dropped him when it was evident he was going to miss several weeks and now I just picked him back up. Ngata has been quite good for me and I am somewhat leery of a guy coming back from such a long injury layoff. Is the safer bet to start Ngata and then get Cole back in next week if he has a reasonable game?

painkiller

That sounds like a feasible plan. I wouldn't be able to pull that off in my leagues, but if you can get away with it, do it.