Making the decision to go "Full Time" is not one to be made rashly! There are a myriad of complications; but there are also a myriad of joys! If you sell your "stick-n-brick" home, you'll have to establish a domicile
for drivers' license, vehicle registration & insurance, health insurance, voting, mail, etc. While technically not legal, many people use the address of a relative or trusted neighbor. Keep in mind, though, that that address will influence your insurance rates. So if that person lives in a "high crime" or "high traffic" area, your vehicle insurance could soar. And what happens if that person moves? And will your health insurance cover doctor visits and (heaven forbid) emergency surgeries at your temporary location? Or will you have to return to your domicile location for services?
If full-timing for you means taking your rig to a permanent location, you'll use that location as you domicile. If not, (fortunately) there are several mail forwarding services
that can help to provide you with these services. "Americas Mail Box" and "Escapees RV Club" are two that come to mind, but there a others.
Also fortunately, the internet has certainly made full-timing easier! I do all my banking, Social Security transactions, credit card & insurance payments, and most of my communications on line.
Now for the joys!
I can travel virtually anywhere in North America with my RV. I can spend the beautiful spring, summer, and fall in Michigan (my former home), and winters in the warmer and milder south. I've spent the last two winters in the Texas Hill Country. And I've had the opportunity to visit many friends and relatives all over the country while in transit. Campgrounds and fuel will be your two largest continuing expenses. But you can conserve on both by staying in one place for extended periods of time. Most private campgrounds offer reduced rates for stays of a month or more. I prefer Michigan State Parks, but the maximum stay at those is 15 days. So I stay at one for 2 weeks, then move on to the "next closest" park for another 2 weeks. I use my TV (many full-timers use their "toad") for day trips to nearby attractions. Fortunately, I've been able to land several month-long "Campground Host" positions, that provide a free campsite
for 30 hours/week of light work. Many folks - like EdAtlanta - get "workcamping" positions. which may provide a free campsite plus wages. Fortunately, also, fuel prices have been "halved" over the last two years. Unfortunately
, that probably won't last forever.
Finally, pick your RV wisely. While most RVrs select their rig for 2-10 day outings during the summer, you need to select yours for full timing. That means much more storage space - particularly for clothes. And pick one with a floor plan that meets your needs and has enough space so that you, your significant other, and any pets won't be constantly tripping over each other.
That's my best advice. Hope it helps. Good luck with your full-time prep!