Before I begin...q&a on custom dyi viv

[buffcoat]

Ok. I really wasn't planning on building this yet but my girlfriend fell in love with a dwarf retic. So now, we need a viv.

What I was planning on doing was an 8x6x2 unit.

Bottom will be for Levi her retic. Second shelf will be two 4x2x2 units for my jungle and red tail. Top row will be approx 3 2x2x2 vivs for my ball pythons and my hognose. I was going to use 3/4" plywood, sealed with drylok and reptile safe silicone. I was thinking about using styrofoam and grouting/sealing that as well. Sliding doors for Levi and fold down doors for the rest of the bunch. Heating it with individual CHE's and using led's for lighting. All on dimmers/timers/thermostats.

Does this sound viable before I go shelling out a few hundred buck for this project? See any flaws or any way to improve it?

Thanks in advance.