I agree with NIghthawke. I had a mixed team (two in fact) that were RAF teams and I started with them at 80. I started by doing macros in layers.

For example my shadow priest's macro was basically shadow wordain, mind blast, mind flay until the next mind blast, repeat until SW:P wore off and repeat. I used that until 71. Then I added in Vampiric Touch, Vampiric Embrace, Mind Sear, etc. as I learned how to use them.

Go to yon wiki and find some marcos there. You can just replace abilities you don't have with commas. It really helps to play each class solo at least a little, but that sort of defeats the purpose of boxing :/

I have some macro examples on my blog http://coltimar.com/blog but those are basically stolen, compiled and customized from here. They just show what I use on my toons.

Good luck!