If you are going to mostly set up in one spot for months at a time, a trailer is good. But if you are going to be highly mobile, seeing the country, if you are going to be traveling a lot like you say, I would consider a truck camper. 1, 2, or 3 slide.
Advantages:
Almost no set up/tear down when you stop for the night, or when you leave.
You can park just about anywhere a car parks;
Easy to pull off the road suddenly when you see something of interest, or make a quick turn around and go back to it;
Capable of off roading for great boondocking opportunities.
You don't need to tow a car because you have the truck;
Only 1 vehicle, 1 engine, 1 set of tires to maintain.
In many states, the truck camper has no licence, registration, or annual tax.
Most of the time, you just leave the camper on the truck, and take your food, your clothes, your bed, and your bathroom with you when you go sightseeing, shopping or on day trips.
You can easily take the camper off if you want to leave it at a campground and go somewhere without it.
When the truck needs service, take the camper off in the parking lot of the service garage and stay in it while they service the truck.
Truck campers with slides often have more usable space than a class C.
The bigger truck campers have larger holding tanks than a typical class C, for boondocking//dry camping.
It is very worthwhile to check out some truck camper dealers like Lance, Eagle cap, Arctic Fox, and Host for some very full-time worthy campers.
Here is my camper in a single parking space at Coco Beach:
At the Griffith Observatory. No Class C or trailers were allowed, but pickup is:
Boondocking off road on public land in Wyoming: