Indoor Goya Park

This map is work in progress, there is no grind spline or textures yet. I am not that good with computer stuff, but always dreamed of designing my own skatepark. If this map is put out to the public this early it's because i want some feedback and critics. please try it and tell me what's too big or too small and if you have any recommendations or ideas to improve the park. My idea is to make a Warehouse type skatepark with a street part in the front and in the back of it, and all that surrounded by simple buildings for a nice city scenery.