rims and tires weld draglights

I am looking into getting weld draglights for my 96 mustang i got.. this style rim, Summit Racing SUM-531-5865PS - Summit Racing® Quick 8 Wheels - Overview - SummitRacing.com
I am wondering what is a good rim and tire size.. i want a wider tire for the back and a narrow one for the front. I herd with the 15x4 rims up front you need a 1 inch spacer to clear the caliper is this right?

Weld Wheel Chart

Bill Putnam's chart. Should be pretty close to the Summit wheels.

I've run both 3.5 and 4 inch tires in the front. 3.5 in the prostars, and 4 inches in the centerline telstars.

The wheels you are looking at are not Weld wheels, they are Summit's wheels. They are not the draglights