There is no wrong way. Spend some time sitting in different configurations (class A, C, trailer), see what feels like home. A half ton pickup really limits your ability to pull larger trailers but maybe you don’t need a larger trailer.
When we decided we wanted to full time, we were focused on a class a. In the end we bought a 40 foot fifth wheel. It felt more like home to us and we had the truck to pull it.
Every configuration is used for full time, from tiny little class B van conversions to the largest of the large class A. It all depends on what you want, what you need, and what fits your budget. Just have fun with it.