It's a nice suggestion for a project, but I wouldn't "waste" these parts on a watch that is just an homage, anyway. If you're building an homage, why do you care how accurate the case parts are? There is no gen to live up to.
I'd go with the 104, if you're OK with an auto. That way you could leave the CG polished. Source a 104 caseback (series will be wrong for the CG style, but whatever), 104 dial, Swiss 7750 and hands. Job done.