Good for you, many happy memories can be made from a new camper! That's exactly the floor plan we're looking at to replace our recently sold 2008. While it's brand new, and you're not doing much camping over the winter, it's a good time to go over every joint in the roof (and all the stuff poking through the roof) with Dicor sealant product and all the corner joints as well where the sides of the trailer meet the ends. You'll be getting ahead of the leak curve that all TT seem to develop over time. Our 2008 had several 'untraceable' leak sources all around the rubber roof edges, and the corner seams of the sides and ends which rotted all around the roof and made 'soft spots' all over the bath floor and by the exit door. Use the 'leveling' lap seal all around everything on the roof and the seams of the roof and sides, and the 'non-leveling' lap seal along the corner joints. It also wouldn't hurt a thing to use the stuff around everything that comes through the walls or ends of your unit, like vents, windows, running lights, everything. These things are assembled very fast, the crews under pressure to crank them out, so things get missed a lot.
https://www.amazon.com/gp/product/B0...850_em_1p_0_ti
http://rvbasics.com/techtips/rv-roof-care.html