Need Some DIY Help

Heres what I am planning on first off.

Stealth Grow Wardrobe (SoG)

One Veg Chamber One Flow Chamber
Running all CFL (Will Post DIY Once Done)

I plan to SoG after my test run with bag seed.

Anyways, I've begun building the box and so far I have added a stronger backing (Ikea cheap shit shows light), caulked all the corner and seems.

Now heres my problem. The door itself is on 3 hinges that will run into each of the chambers, thus lies the problem. I am worried about smell. Although I do plan on running CPU fans through a carbon scrubber, I am still worried that the cracks in the door will let to much escape.

Would a small ozone gen cure my fears? Or should the fans be enough with a carbon filter to retain most of the smell?

Also my soil temps have been quite low lately, I have heard about using heating stones to maintain equal levels. Has anyone used heating stones in a Stealth Cab set-up? I need an in-direct heating source for my location, winters can be abit harsh.

Any feedback will be great, thanks.

Keep growing keep smoking

aslong as youve got negative pressure then no smell will escape because fresh air will be sucked in through those gaps, so just make sure youve got a big enough fan exhausting the hot air.