Those are the exact same tires I have on my '65 right now. My car sits lower than most and I'm having some front tire rub issues. I'm going to down size the fronts to 205s and also roll my fenders some. The rears will have some rubbing on the parking brake and you will most likely need to tie it up and away from the rear tires.
Also, I have 15's from a 90's Mustang GT and I do have some back spacing issues and had to put washers on the wheels to get it to the painters (I'm not driving it, it was hauled and just going to be pushed around) with the top of the front spindle A-frame rubbing the wheel/tires.
So, if you tell CJ you want the same back spacing as stock 15x7 Magnum 500s you should be OK with those tires/wheels, however, check your ride height compared to mine as you may have some tire rub problem (when turning and hitting a bump). If yours sits low I'd go with a 65 or 70 series front. My link to my Mustang page is down below my avatar.