Design and modelling for a 3D game

For my video game project, I need a 3D artist for about 50 static (non animated) models. The models are mostly environment props : ancient buildings, structures, platforms and also some trees and plants. Before you place a quote, please keep in mind the following requirements : - the concept art isn't totally defined, you'll need to use a lot of creativity. I'll most of the time show you a reference picture and ask you to get a small inspiration from it, then you're free to let your creativity flow - low poly modelling is needed because the targets are smartphones. Ideal poly count is 500-1000 triangles per model - using 512*512 textures for most models, 1024*1024 for the most detailed if needed - quotes above 500 dollars won't be considered because my budget doesn't allow it - the work needs to be done by mid-July 3ds Max is preferred but you can also work with Maya as long as I can make further edits if needed. There will be at least 4 milestones so we can work smoothly. Please let me know how long you need for the job in your proposal.