Hello, all! I've been reading through this forum for a few weeks every spare minute I've got and have learned a LOT, it's an excellent resource.
I've always been interested in snakes, but due to my mother's fear was unable to procure one in my youth. Thanks to college and a steady job that dream is now a reality! I've been reading care guides, husbandry pages, forums just like this one and all sorts of FAQs to prepare myself for my very first snake.
I currently have a bearded dragon and (here's where the questions start) pet rats.

As stated above, I do keep pet rats. I'm in a dorm situation, single room w/ no option to house my herps separately from my 'fuzzies'. Even worse; all my animals are stored so they are visually available to each other (because of my room design/layout). I will be feeding f/t to my future BP since I honestly can't have two sets of rats, it would kill me to sacrifice one set even though I would be doing it for the good of another one of my pets. with that said,

will housing a BP under/across from live rats be in any way detrimental to the snake or make feeding f/t rodents (even if fed f/t previously) impossible?

would it make the snake more inclined to mistake a handler for a meal because of this?

similarly, would there be any sort of strain placed on either the BP or the bearded dragon by being in the same space (but of course in separate setups, only sharing airspace)? (NOTE: newcomer would be quarantined. Question asked regarding psychological health, NOT parasite transfers etc)

Does anyone happen to know the operating electrical cost for keeping a BP? (odd question, i know)

at what age/length does a BP bite start to cause significant damage to a handler?

what can I expect as far as standard veterinary fees go for a CB ball with no major health concerns?

and lastly (and certainly most opinion-based), which is better? a male or female BP?

again, thanks so much for any responses! I really want to do all my research well before my little beauty comes home. I'm a fan of being an educated pet owner in advance. After working a few years in a no-live-sale pet store I've seen way too many huge mistakes to go about making hasty decisions, that's for sure!

Best wishes,
Chris