Wheels for a duster offset and backspace

Okay guys I have been reading and I don’t think I’m fully comprehending how back spacing and offset work.
I’m working with a 74 duster with a 8.25 rear with disc brakes that I took off a Jeep. The car is BBP.
I’ve put on tubular upper control arms stock steering rods.
In the back Hotchkis leafs and sway bar in stock location and Hotchkis shocks all around.
I’m attaching a link for some wheels that I’m Curious if the specs would work ? If I’m understanding all of this correctly.
Motegi MR138 Satin Black Wheels MR13877012738