We have a small cabin on some property which we are getting ready to install a pre-fab shower, pedestal sink and commode. We have never done any of these things and could use any help that anyone can give us. Our area is about 6 x 4 and we are installing a 32" shower. We have the septic system in and that is it. We have not done any hole cutting or anything like that, it is a clean slate... any advise would be most appreciated. Thank you in advance!