It looks a lot better. I have a few sudjestions. One is that it still seems saturated. Are the rails suposed to be wood or an orange material? I am not sure what budget you are working with but having chamfers on all the corners would help a lot. I am sure the render times are like they are because of all the lights and pphoton mapping. You should be able to drop the numbers a bit and still keap a good quality. Did you use a bollean on the circular hole on the roof? Looks like ther is some artifacts there