New to Morelia, Many Questions

[Alicia]

I've only had Jungles (one many moons ago, one adult now), but . . .

1. As far as differences, I can't speak from personal experience, with the one subspecies. As well as size differences, I've also gathered there can be general differences in temperament, with JCPs sited as being extra nippy. Is this true? I don't know.

2. This is true. Just like Spiders, it runs the gamut from being basically invisible to the animal being uncoordinated and completely loopy. They may be affected more by stressors than Spiders are. But, again, just JCPs here.

3. I didn't, and probably wouldn't, but it's been done by others.

4. Feeding regimen is totally different as an adult. As a nine-year-old, Sheila eats every 4-5 weeks, sometimes 6 when she's in shed, whereas my BPs the same age average a meal every other week (with some variation). Prey size, too, is indeed different, with the carpet taking bigger prey relative to her mid section.
Heating, I use a RHP with her to create a hot spot as opposed to UTHs or Heat Tape.
I admit that I don't pay a ton of attention to humidity in my cages, outside of adding a little extra for sheds or MI, but, yeah, I'd say she's at the same humidity as my BPs. Maybe a little lower now.
Temps, pretty much the same. Maybe a little lower ambient. (caveat - this is an adult animal who's used to my setup, and I tend to run things a little cooler much of the year.)

5. Once settled, I handled her a couple times a week. Same story with Orion back in college. To be honest, both were weirdos for baby Jungles, in that neither was nippy as a youngster. All the same, I used thin gloves and a DIY hook with both as babies, because I hate being bitten. In hindsight, I think gloves help babies adapt to handling without the shock of human body heat.
Sheila is hook trained, as it's nice to be able to get her out of feeding mode when I need to change her water or do cage maintenance. She's very receptive to it, and quite smart about it. Unless she's really hungry, just showing her the hook is usually enough. I've also found her to be my most readable snake.

6. I'd really recommend tracking down a copy of The Complete Carpet Python by Nick Mutton and Justin Julander. It's out of print, but I gather there's going to be a second edition at some point.
Some carpets can be a hassle to convert to rats.

That's all I can think of at the moment.