just my 2 cents about those Thermoelectric/Peltier Module thingy's.
A few years ago back in the gcse days my mate bought a couple for his project. The ones he got ran so hot that the wires fell off, and just generally fell part. Im sure they would have been improved since then (nearly 7-8 years ago), but deffo test them thoroughly.
Thanks for the heads up, going to build a test system first to use them in, then once it works correctly install it into my rig!