As Scott said, flipping the axles usually adds about 4" of lift, so break out the tape measure and see what that does to the items you mentioned.
Also know that your WD hitch head will need to go up the same amount to keep the TT towing level. I added a 2" lift to my TT to accommodate LT tires and had to raise the hitch by 2" also. Good news is that you only need to do it once to get it dialed in again. Higher TT also means more wind resistance but you shouldn't have any issues pulling it with your truck.