Millions $$$ or rock 'n roll???

Help! I'm in a bind. Here's my latest post, which should give you a short summary of the situation:
http://shoestringtour.blogspot.com/2010/04/commitment.html

Basically I'm planning on going on rock tour with my band for about two months. I want to do rock music. I also want to retire in my 20s, a strong possibility if I *don't* tour. But if I don't tour I then have to go back on my word and I irrevocably alter the course of my music career, perhaps destroying it forever.

I need some serious advising here!

Thanks.

(Btw, the bandmate who I reference in that blog also keeps a blog at http://trashrocktour.blogspot.com/ in case you want to gather more background on this.)