1. A super long time. Like, a couple years. Mizahar is big.
2. You could try, but you might want to run it by the storyteller first. Attempting to kill NPCs, especially ones with names, usually is the sort of thing they'r want moderated
3. It's possible, but you might want to start smaller and establish yourself as a PC first (not to mention train your skills to the point where success is even possible). Prove you respect Mizahar and its world before running off to kill its NPCs
4. Sunberth accepts pretty much anything (except mages). (Also, for lose definition of "accept".) I'm not as familiar with Syliras's attitude (Radiant, the Domain Storyteller, would know for sure). My guess is, they'd be permitted, but any sign of trouble would come with...consequences
5. You might be able to do a front flip, but in order to get over a guy, AND stay out of reach, would require you to jump pretty high. At competent level, it seems like the sort of thing that you could
attempt, but success is by no means guaranteed, and it would probably not be practical as a combat maneuver. You might succeed if the guy was standing perfectly still and you were 100% focused on the flip and not on, say, not getting stabbed
6. Your best bet is to probably find a player. Maybe look in the
matchmaking forum?
7. Yes. Living expenses cover things like food and clothing. If you're not spending money on living expenses (or, alternatively, spending two threads a season demonstrating obtaining your own food, speak to your local ST for specifics), then you are starving, weak, malnourished, and probably dying. Not to mention cold, homeless, naked, and sober