Sorry for the late response, we didn't see your comment till now. Here is the link to our greenhouse 3D builder if you would like to customize something! idearoom.heritagesteelco.com/?dealer=1660
Lol...he didn't tell a things about using gravel to level it and make it right. He just talked about fees. Gravel will give you a better "floor" too, especially after in settles in.