So far this sounds a lot like "I want a big boat." Bigger than what?
Mid- to full-sized... Three row seating? Trailer towing capability? Four-Wheel Drive?
And what's going to be towing this? What weight can it handle?
Where are you going? Towing a heavy vehicle can be an issue in the mountains when it isn't along I-95 and I-10.
To me, mid-size is something like a three row crossover like Flex and Acadia.
And full-size is a Yukon, Suburban etc. 6000-pounds or so.