A 3-3/4" to 4" backspace should work perfectly on a 7-inch wide wheel. Probably need 4" backspace with an 8-inch wheel.
Hey guys sorry for the super delay, had quite a lot of unexpected things pop up. I finally got the wheels and tires mounted! (fenders are off cause i was redoing the front suspension etc) Love how the wheels look, going to drop the car 2" though.