Good Luck. I am a retired RN and also a dog lover. Pit Bulls are nice dogs who are loyal to their owners. They have been taken advantage of by unscrupulous people who have taken advantage of their loyal nature and strength.
But, the sad fact is that they have a reputation that has made it difficult to stay in places other than your home when in the company of your dog.
My biggest concern would be how you are going to manage being gone up to 14hrs a day when living in a 5th wheel by yourself. Perhaps someone else is going with you?
Whatever...best of luck. I did a bit of travel nursing and it was awesome.