1) I am 17 and live with my family. My mom does not like snakes but the others are okay with it. I do have my parent's permission to get a snake (non-venemous. The adder would have been a few years when i move out) and they doo know the space, eating, and size of the snake. Yes, I do have others that can care for the snake and will (hesitantly) care for it. Though once I get a snake I won't be going on any vacations due to how much time my collection requires.
2) There are none on carpet pythons as far as I know. Though I do know someone that can explain the local laws for me so I can know for sure.
3) My parents own the house. I have plenty of room to house a irian jaya carpet python though not enough to live comfortably a Burmese python. (not that I would ever get one, just using that to give an idea of the space) I work at fast food, and usually earn about $140 every 2 weeks.