Personally, I think this would get real old if you had to come back to Texas every 7 days. It will wear you out along with your wife. It really wouldn't be a relaxing trip with all the driving.
Instead, stay in the house, get a truck and used trailer or 5th wheel to save on costs vs. a motorhome and just take shorter trips or a longer one with vacation time. You don't have to go out every week you have off. Your son will start preschool sooner than you think or get into sports or other activities. Going away every other week will disrupt routines and children do better with routines. That's what most young families do.
Don't go into debt to do this. You're still young - take it easy with your plans.