ok, i am pretty sure i answered my own questions. these wheels should fit my tire fine and fit my tundra fine as well. 255/70/18 are the stock tires i have and they should have no issue going on a 18x9 wheel. i will probably get a bigger tire in a couple years when the tread wears down on the ones i have now.
If you are still looking for a Bakflip you might want to contact Auto Accessories n more. let them know you have a quote and they WILL beat it. That is how I got a Bakflip F1 for less than 800 shipped!