With no debt, your monthly budget should be more than adequate unless you move daily and pay daily rates everywhere. For websites and finding campgrounds, we use rvparkreviews.com a lot, also freecampsites.com and allstays.com and campendium.com. The last 3 sites will give you boondocking locations and small city/county parks, corp of engineer and forestry parks etc. They are quite helpful. We pull a utility trailer behind so overall length is 48' and then I drive our Jeep. We have never left a campground because we couldn't fit into any site. We also fill with gas a regular gas stations all the time. Use google satelite view/streetview to check access after using gas buddy to locate best prices along our route. Walmart - we have done that a few times. We prefer small cities and never stay at a Walmart in a large city. Usually quieter and not right next to an interstate. Feels safer too.