Wheel advice for my 5 lug

I have a 1996 2wd ext cab 4cyl that has 215/70R14 6JJx14 ET38 5x114.3 M12 x 1.5 cb=67.1. All of the steel rims have some bending which made balancing them 10 years ago difficult. It's got all season BFG long trial tires on it and I will have to change them out by this summer. It's kind of an extra vehicle mostly used for hauling, chores, etc. I was thinking of some jeep rims in either 15 or 16" and want know if they will work. I will have to use some new lugnuts going to alloy and use center wheel spacers and I have seen some that might work. I'd like to put some more aggressive tires on them because I spin a lot with the street tires.

some rims that i've seen on C.L. One is off a 98 cherokee:
225/75R15 7Jx15 ET20 5x114.3 1/2" - 20 UNF CB=71.5 or
215/75SR15 7Jx15 ET25.4 5x114.3 1/2" - 20 UNF cb=71.5
I've seen some 16' that might work. I was recommended a 15 inch because of the higher sidewalls but 16 might fit and is more common. Will I have a fit issue or offset issue with the Jeep stuff?