Hey! Sure thats a total possibility. I really made this project public for one reason only: To help others build their own packs so Im glad that you're doing so!
http://forums.kc-mm.com/index.php?topic=20291.0
^This is where I usually get my Stage Expansion pack from. All you do is replace the stage, sound, module, and .gct (he has more detailed instructions on there) and your good. If you're trying to add this pack over your existing one, take the selmap folder out of the common 5 in the CEP and merge it with your existing pack.
He hasn't updated to 3.0 but when he does I'll be adding it to mine also so we are in the same boat in regards to timing.
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