Congratulations, you will love it.
I would recommend that you fill at high volume stations only to have the best chance at fresh fuel with no moisture contamination and keep every fuel receipt. Ford also has a diesel fuel additive that is recommended for their trucks and I would recommend you use it in every tank of fuel and keep your receipts. The Ford 6.7L diesel uses a "sensitive" Bosch CP4 high pressure fuel pump and Ford has been known not to warranty them if they fail. Your receipts for this along with all scheduled maintenance will be your best bet on avoiding this issue.
Let us know your thoughts after you tow with it! :B