Back spacing and tire sizes

I recently bought a set of these that I'll be using on my '68. They look a lot like the old Cragar G/T wheels I had on my Road Runner back in the day, which are my favorites. I'm still trying to find a set of those.
I haven't finished the mechanical work to change from BBP yet, so I can't tell you how well they fit, but I think they'll be okay with 215/60-15 tires. I think one of the keys is to keep overall tire diameter a bit under 26 inches.
The Rocket Wheels look more like the Torq Thrusts than the Cragars, but I wanted to put out another option for you to look at.
Cragar 610G571242: 610G S/S RWD Gray Wheel Size: 15" x 7" | JEGS