What size tires should I go with?

So I finally pulled the trigger and ordered the Fat Bob's lift, and the Method Standard wheels (15x7). I dont do too much offroading, but i have been wanting to lift my 5 lugger for a long time. I've been lurking this site and have heard that BFG all terrain 31X10.5x15 will be sluggish with my stock gearing...But im worried if a go with a 30x9.5x15 they might look too small after the lift. I know its only an inch difference, but I want to do this right the first time. Any advice will help.
Thanks - John

 

Here she is all done. I am selling all 4 stock tacoma wheels with the BFG all terrain tires (size LT215/75 R15). The tires are slightly larger than stock, but ride much better. Wheels are in great condition with a little polishing they will look brand new. The tire have approx 25k miles on them but still have a lot of tread left. The rims come with the stock tire pressure sensors which are programmed for the 2009 2wd tacoma. I'm trying to sell as a package for $650 OBO PM me if interested I'm in SoCal.

 

I ended up going with the 30x9.5x15 and I'm so glad I did! Rides great with the longer AAL and new shock. Little power loss but intake and exhaust will come next

 

Looks great! Now I know my next tire size (30x9.5x15).

 

Why not just go up to the 31's? Didn't need the lift if you just wanted to move up to 30's

 

Any pics of the truck with the 215/75-15 tires? Looks good BTW!