I'm looking for a decent bench that also has back extensions, as portable as possible.

I'm bouncing around the country right now staying with family and various AirBnBs. Dumbells at 25 and 40, a pull-up bar, and bodyweight exercises have proven surprisingly effective for me in nomadic Covid times, but it'd be nice to do flys and presses on a bench, my core needs some bench work, and I've hurt my lower back and need to do back extensions to help recovery.

This is what I've found to be the best fit, but the reviews are mixed: https://www.amazon.com/Finer-Form-Mu...ct_top?ie=UTF8

Ay suggestions? Not trying to spend too much but can spend a bit more than the one above.