Berreez,
We are from MO as well and started this life of Full Timing last year (during transition from military). Our budget is about $40K/yr, but so far we've been able to put money away in savings (using less than the $40K). We too are very frugal and are doing the military FamCamp stays.
For the individual who stayed at Patrick AFB…don't know when you were there, but the park is MisManaged! No washers and dryers and NO WiFi (as promised). Also, the moving is "sketchy"…seems as though very unfair (some move, some don't)!
If you plan to stay at FamCamps, plan on $500/month…but as others have mentioned, fuel costs are your biggest contributor to the budget. If you are "rolling" you are paying! Staying for 1 month at a park usually gets you a reduced cost allowing you to save a little more for the moves.
We are planning a long road trip in the spring/summer with few nights at any one park. With the mileage of 7.5MPG in our gasser MH, we'll be paying a lot for moving. Therefore, we are looking for more Boondocking sites along our travels. Plan is to spend 3 nights boon docking and 2 nights in FamCamps! This should save us a lot.
Best wishes on the travels!
BTW: I'd love to have a DP vs gasser, but we found this rig at the right price for our first MH. Since we aren't "pulling" anything very heavy, the gasser works fine.