Im at 41" all around with this setup, and done plan on changing any time soon. I've spent too much time under the front end of this truck lol. Yeah ive looked at the 295/70's, but i want more width, and those and the 275/70's that im running now are tall and skinny. Are you rubbing anywhere now? If your not, im pretty sure i can run the 33.6x12 305/65's.
That graphic has really helped me out too. Between that and DTD Tire Size Calculator, ive been able to figure out most everything.