Here in Oklahoma I've had good results from both( setting up a few weeks pre-season and the day of the hunt,for a evening hunt)
The main key is to set up in a shaded area,take some limbs and brush and cover it a little so it don't look like a sore thumb.Then again don't take too much foliage away from your surroundings while trying to "brush it in",and Like virginiashadow said know your wind !!, and try to set up in the shadows!!!
With that being said I think you should do fine, Good Luck !