Dolamite S. Biffle
Biffliest Person Ever
Back to the original question ...
I would certainly consider sponsorship. But the way I'd approach it is to see what bands are bubbling up as having a reasonable chance of appearing (i.e. have shown prior interest and availability) and then put my money on my favorite of the bunch. I don't think I'd just shout out a random band name and dollar amount.
Ken
I think that Ken has a great idea here. Though I would still really like to see Silent Force.