Oh Jesus... don't ever mix orange soda and rum. I'm not drunk at all... just wanted to share that. Poor college kids will do anything...
Interestingly enough, before seeing your warning, I decided to try mixing Bacardi 151 and Jones Orange & Cream. Someone is on their way back here right now with coke to mix with, but I didn't feel like waiting.
For future reference, your suggestion is a good one.