"Hehe , that's such a funny pic. " Unquote: BrainEater
Dude, congrats on the project. I didn't mean that comment in a derogatory state.

What you're do'in there, is Stellar!
Please remember though, that all the different components, that make up your build, are all gonna expand and contract at different rates, based on temps. All the different materials that make up a board, are going to expand and contract, at different rates.
(especially if you drop below Zero)
If you were to take the system to that state, and leave it there.
You'd be fine.
Chances are though, that isn't gonna happen; Not for 24/7. Not for a consumer level system.
You should join the Army, Navy ,Marines; Tell 'em your idea.