Environment artist needed

I'd like to hire an environment artist for creation of realistic terrain of Australian/North American desert for my realistic car game simulation with use of tools as WorldComposer/TerrainComposer and other tools used for "24 hours demo " ( [login to view URL] ) as Relief Terrain Pack, Advanced Foliage Shader, World Machine, Photoshop and possibly others that will improve the quality and realism of the terrain but mainly save significant amount of time in the development process. Because I'm just small indie developer I'm looking for most effective solution with best ratio between visual quality/realism of the terrain and costs of the development process and as far as I know the approach used for the creation of "24 hours demo" is the most effective by my knowledge. The map should be created by use of satellite images to reach maximum realism of the terrain and to save time of its creation plus the vegetation/assets and the map overall should be optimized for good in game performance and low CPU/GPU load/usage because there will be at least 40 players on the map at the same time although most of the time there should be just one car on the screen because of large size of the map to allow player to freely roam the map for endless hours to explore it and to enjoy the environment. The size of the map should be at least 1.000 km2 but it depends of the price for the map, it's in game performance and amount of data for the map to not loosing users because the need to download huge amount of data before they can start the game first time. If I understand it correctly ( check this link [login to view URL] where you find pdf tutorial like two guys made 900 km2 map with those tools within just 24 hours so the map for me should be done within couple days with use of those same tools ) there should be just small difference in time of the development process even for map much much bigger let's say 1.000.000 km2 in the case there would be still just the same type of terrain and vegetation/assets if the developer will use those tools. Further I'd suggest use of existing vegetation and assets from asset store/internet/TerrainComposer/SpeedTree etc. for the map instead creating new ones to save the costs further. At last the map should have at least realistic sky with static clouds but in best case scenario I want there dynamic weather with moving clouds, raining, snowing, wind etc. in case there is the tools in the asset store that contain those visual effects in decent visual/performance quality and we don't need to create them costly then. So what would be the price for 1.000 km2 map and for 1.000.000 km2 map and what size of map would you recommend for Unity 5 can handle and mainly for the purposes I need because if the game will be successful later I want make it massive multiplayer with thousands players in single map. Here is the link [login to view URL] with the video at 1.00 with car riding the desert and I'd like to approach as much as possible to visual quality of that video for my in game graphics. I'd prefer to give this job to developer that have experience with all before mentioned tools and he created already some HQ realistic maps with them for smooth and quick development process but if you don't use them all yet then apply anyway because main criteria will be the price and quality not the experience and don't forget to send me maps you've already made so I can check them because I'm looking mainly ( but not necessarily ) for HQ stuff/developer and mention the tools you used for them plus specify what exactly you made for them in case you didn't made all the stuff in the maps alone plus mention all your skills, experience and tools you can handle. The applications without links for your previous maps and without full price for the entire map will not be considered. Thanks in advance. Peter Cernuska