I've done a little more research and I think I'm going to stay with 245/35 in front and do 275/30 in the back. Why? The AD08 is really wide. Here is a photo of a 245 width AD08 on a 10" rim. It fits perfectly. So with my 9.5" wide fronts, a 245/35 AD08 will be perfect.
In the back I could probably get away with a 265/30 but I'm going to do 275/30 just to get a little extra sidewall.