My suggestion would be to put a camera on the trails to see whats coming in...and if you cant hunt the tree....there is nothing wrong hunting from a blind, i just recently purchased a double bull blind, a bit spendy but well worth it. I killed my first deer ever out of a blind, and it was with a bow too!
Just keep least amount of windows open to keep the animals from seeing movement, and some cover scent and your ready to go. And if you can keep only one window open, theres not really a need for camo because it keeps it nice and dark, just wear dark clothes and your good. But camo does look better in trophy pictures