Simply changing radio channels shouldn't be a problem: there is no fundamental difference between them.
Combining the init files should also be easy: just copy and paste all the stuff from one into the other. The only possible problem is with something being unintentionally duplicated. For example, it's possible that both scripts use the same variable.
Overall Kali is probably right: might be easier to go with the Support Pack. It's not impossible that the relevant bits are based on those scripts anyway, I can't remember off the top of my head.
It's in the Editors Depot ... look down the left hand menu column till you find Mod editing .... then MP/SP support pack.
Here's the
link.