Replying to Backyard railjam

so me and a bunch of friends have some rails built up, also a couple of stalls and i guess a jump of sorts, (the stuff we have can be seen under a-d-a-m's videos, and some other stuff, so where we live theres a shitload of kids who ride twins, and a bunch of kids who would go, would it be a good idea to have a little railjam, maybe even try to get a local shop to "sponsor" it, if they say yes maybe charge like 5-10 dollars for the day and split the profits with the shop or something, and then give away a bunch of prizes and the money to like winners and random kids i guess........and please, dont kil me for this, i thought it sounded fun