charity music festival

I started to plan my 40th for next year, while doing so i realised that I know some big name bands and some other not well known.
The more I thought, I began to realise that rather than make just a private show of this, why don't I consider making one night a charity fundrasing to a local organisation, I know local councelors and will put it to them.
Will see how this pans out, hopefully the community see's fit to have this, otherwise it will be one hell of a private function.

Any info on putting this together would be appreciated!