to stop the smell you could line the back/side with 1/4" cedar panels. it should get ride of the tank smell( i think) looks like your gonna have a nice little set up there.
another way to get rid of the smell is to run a carbon filter. some ppl will run them 2 or 3 days a month, but i personally like to run them 24/7. i get some nasty smelling water if i dont