Hi Michele,
It's definitely a good plan to wait until summer to full time IF you're going to be staying in Connecticut, as I believe is your plan. That kind of winter is brutal to try to live in an RV. I wonder if that's what you mean about winterization. To many RVer's, winterization means putting up your rig for the winter, draining water from all outlets and tanks, blowing air through the lines to ensure all water is gone, and adding antifreeze. In my case, this will be done by an RV tech, not me.. Nope, not me. Most full-timers won't winterize to store it for winter, otherwise; they're not really full timing but part timing. As has been said, most full timers head for warmer climates in the winter. It makes the RVs happy, and a happy RV makes for a happy camper!
In your case, I'm wondering if you mean winterization as in live in it during a cold climate winter? I've seen that done in Montana. A neighbor RVer was planning on sticking it out in the Glacier area while we took our RV and headed for southern shores in October. Pretty cold even by then. This couple wrapped as many pipes as they could find in the underbelly of the RV (a fifth wheel, I believe), skirted it, and kept the heat going inside the RV to stay warm and keep the indoor plumbing comfortable. It still had to be a truly cold experience for them. It can be so hard to keep these tin cans warm. There are some RVs that are "four seasons" meaning they have enclosed pipes in the underbelly (you can look under them and see a thick black rubber or something covering under much of the length of the RV). Arctic Fox is one of them. Additionally, they should have extra good quality insulation within the walls. But you already have your RV, and you'll know if it's a "four seasons" RV. Another tip is that if electricity is paid for at whatever site you are staying at, get yourself a little space heater and run that puppy to save on propane. Of course, if you have to pay extra for electricity, you might want to stick with propane heating.
The only other part of winterization I can think of is to scooch out of Connecticut (and the Northeast) early enough in the fall to avoid bad weather on your way down south or southwest to warmer climates. It is entirely unpleasant to deal with ice and snow when driving a big rig or hauling a trailer/fifth wheel.
I know there is a traveling nurse organization, and many of those folks travel and live in their RVs. I don't know why there wouldn't be a traveling lab tech group. I hope you find what you need. There is always the Work Campers organization, but I doubt that many of those jobs would pay as much as you'll make in a lab. That's online as well. Many RVers who use Work Campers at least get their site paid and maybe a a small compensation if they work at a campground, others work at seasonal jobs in stores, or house sit, etc.
Gosh, I'm so full of advice! Must be the chocolate I ate at 10:30 p.m.
Happy travels!
Dawn