Sorry to be so mean, but here are a couple of problems that I see:
1. It doesn't look like you're putting any of your own money into the game, which means that you have almost no personal incentive to go through with this!
2. Why would someone invest in a game that is upgrading someone else's (probably) COPYRIGHTED game? It's not a new idea, it's just "I'll steal this game's idea and add invincibility!!!!!111oneone111!!!"
3. Why do you need $5000?
? This sounds like a really, REALLY simple game that would take a very minimal amount to develop! You also mentioned "keeping the site up." IMO, you're not going to get millions of visitors on the first day of release, so I think you can get away with a VPS (at least until you get a good user-base!).