Concept Art for up-coming mobile / PS3 game

We are currently in the middle of production of our up-coming PS3/4 game, with the first release happening on mobile devices first. We are looking for a couple of talented concept artist to get on board at this early stage in the project. Unfortunately, due to our financial situation we can only offer an initial profit share (no money up front). However, once we have released the first game ont he mobile device we will be re-investing all that money into production giving everyone already involved first choice whether to take money payments or continue taking profit share. This is set out to be a very profitable project, with several people saying they already love the idea and concept and would definitely purchase the game when it is released. Hope a few people are willing to accept the profit share and work on this project with us (even if this is in your spare time only - I woulf expect you to still be taking other paid projects)