Thanks for the replies guys.
At the end of the day I want to do 'C': all-of-the-above. I want to get a 501st ID, I want to get MEPD deployed and, like cjfive said, I'd like to make a difference. I've done alot of other reenactment in the past, and it's nice to be starting something that has a community based outlook.
So I guess I'll be making a Classic or Marmit. I suppose I could make a SE but, hey, who needs the grief huh? especially when it comes to getting this n00b deployed
Now, back to trying to hot-glue these parts together...