1. Use png instead of 5mb bmp picture.
2. App Game Kit is only 2D.
Maybe you should check out Darkbasic pro forums instead?
Programming a game (especially a sim)is a very time consuming progress, so I doubt you'll get many volunteers to code for free. Darkbasic is very easy to learn, you should make somekind of demo to wake more interest.
Very nice model and original idea though.