have fulltimed in the past and will again in the future. 15.5k dry which doesn't mean much, loaded we weight about 18k - Go to Escapee's smart weight and get checked then u know for sure; peace of mind for 55 bucks & thats w/ everything filled up! We don't stay at parks (to often) so it's not that important to us as long as we are close to what we want to see. MPG also is the cost of rv'ing so if it's 8,10,15 mpg then thats what it is. There are ways to reduce the hit u take in $ dependent on the length of time spent on the road and the length of time it takes u to get from point A to point B.
As for the problem w/ big rigs u get use to figuring things out. U will use a motor carrier road atlas, a good trucker/rv gps, extra fuel capacity with in-bed or replacement fuel tank or MDT truck, I've f350 psd,lb,crew cab,dw with a 50 gal in-bed transfer flow, dezl 560lmt, and don't have to worry much about finding fuel stops etc. I'm 6 feet shorter than a 53 ft tractor trailer rig so I go were they go for fuel and vittles !!!
