13 inch - 14 inch - SBP Question

Mopar newbie here asking what I think sounds like a dumb question, but I need to make sure.

I am buying (and awaiting delivery on) the light blue Dart GT 'vert in my avatar pic and it has 13" wheels with manual drums all around. The goal in time will be to change it over to LBP with disks, but until I can afford to do everything that is going to take, is there any reason that I can't pull those 13" rims off and replace them with some used 14" SBP Rally wheels until I can afford to do the full LBP upgrade?

Thank you