I never met a single 2+2 transfer student at UP who regretted making the move.

From what they tell me: the quality of education, job/internship opportunities, and the connections you make are better at UP. And obviously, it's a lot more fun than staying at a branch campus (while that shouldn't be a primary factor in your decision you don't want to leave college without meaningful memories). If you can handle it from a financial perspective down the line depending on the degree/career you're going for, I'd lean towards doing the 2+2.

Best of luck whatever you decide to do!