To be fair I wasn't actually considering Rhinoceros rat snakes, but I'll need to look into this. Thanks for the suggestion!
Yeah, not quite what I was thinking. The thing is, rhino rats seem to need those higher temps, which I can't do with a rack. If I got another PVC enclosure (and I have one on order with AP but waiting...) then perhaps I could do a rhino. But those Asian rats prefer the lower temps that I can more easily provide without PVC enclosures. I can get a lot and maintain them inexpensively. But if they are flighty-bitey-monsters, then I'd prefer not to.
The bonus with Rhino Rats that I found was that as well as ticking all the boxes I mentioned they are seemingly active 24/7 and never seemed to hide away out of sight -great as they’re so beautiful