But before you do any of this, you need the generator. Cummins Onan LP5500 generators are all over the internet for a very reasonable price. I would not buy one from a RV dealer because you will most likely have it serviced by a Cummins Onan service department somewhere in your town IF anything goes wrong with it. Sooooo that leaves a dealer out unless he can come across with a huge discount. You can get the Onan LP5500 down to the $3800 area may be a little more now, they will pay the freight, and if you order from out of your state you can eliminate the sales taxes, at least in Texas you can do that. I bought mine from a online discount house in Arizona and paid no freight or sales taxes. UPS put a scratch on it and popped for $500 in repairs, making my LP5500 $3300 out of pocket. LOL thanks UPS. Careful which LP5500 that you get, for the San Antonio you need the one with two 30 amp circuits, not one with a 30 amp and a 20 amp circuit. Get a whole parts list together so that you don't have to Mickey Mouse around ordering in tailpipes and other stuff. Remember the discount house is providing the freight and you are not paying sales tax, get the whole package. If you are in AZ you need to just look around for an out of state discount house. Perhaps I can provide a link and a part number for you to consider. It looks like the "San Antonio" is exactly like the "Big Country" so I should be able to assist you in running down what you need. BTW you don't need the template to cut the holes under the gen set.