That's really exciting! I'd try Animal Plastics. I believe they do ship to Canada but I'd double check with Ali (super nice). Personally recommend their T10 terrarium.
In regards to the RHP, I'm in agreement with others who already touched base on this subject. With that said, I would highly recommend investing in a proportional thermostat if you haven't done so. Herpstats are my favorite but can get a little pricey. I bought 2 of 3 of mine second hand at half the price.
I keep my probe almost at the bottom of the terrarium and set an ambient temp of 82. I have an accurate gauge that shows temp and humidity, sitting on the bottom of the terrarium so I can quickly double check the temps. It seems like the consensus on temps range from 80-86 from larger breeders who just heat their rooms/buildings and don't provide any additional supplemental heat. I've been finagling with temps for quite a few years and it seems like 82 is the magic number for my BPs. I also live in Southern California so our "harshest" winter temperature is in the 40s.
Now for lighting... I got a little excited about this one because I get to bring up thread that I did regarding LED lighting quite some years ago. The lighting is still working great and it's definitely great for cleaning and feeding at night. It also gives my office/game room a nice ambiance. Here's a link to my zombie thread: https://ball-pythons.net/forums/show...up-in-a-AP-T12
For the wires, I before assembling the enclosure I made a U hole and fed all the wires through there. Then used zip ties to keep them neat. I have 3 different enclosures so wiring needs to be kept in check.
Good luck! Definitely exciting times on the horizon! Keeping BPs in a PVC enclosure is soo easy! Don't really have to worry about temps or humidity so keeping becomes simple and you get to focus to observing these your snakes instead of freaking out about the temps and humidity.
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