Those are the same rims I ordered, accept I got 15x10's for the front and rear for when I get the lift and swampers. Personally I love the look of dark rims so I think that'll look pretty good on your truck
IMO, get the same size tires and wheels for the front and rear so that you can rotate the tires for better mileage. You won't be able to do that with the set up you are planning on now. You should be able to run the 235/60's and 8" rims front and rear with no problems. Just a word of caution, I had a set of the BFG T/A's on a former truck and on wet roads, they sucked!