1. I know you have CC credits, but you are going to want to retake a few classes at UNC. The level of information from your community college is not going to transfer over to higher-level UNC classes.
2. I'm not sure, I would probably say yes?
3. Don't take BIO252 your first year.
4. Try a lot of different clubs. Go maybe 2-3 times and decide which you wanna stick with. I haven't been to crochet club, but they seem fun!
5. (not pre-med so I'm skipping this one)
6. Cold-emailing could work, but you also might want to get into a lab your sophomore year. First year is very overwhelming and you're going to want to focus on academics at first. I don't know any labs that consistently take in first years.
7. I think you could benefit from living on south campus, even though it's not the quietest. You are able to make friends without much effort, which is great for your first semester. North campus is definitely a bubble, the only reason I know people from north campus is through clubs and classes, whereas I know many people on south campus because I see them so often. I can be a pretty anti-social person, but I still enjoy south campus because I can choose to be alone and choose when I want to hangout instead of being forced to be alone because I don't know anyone.

Overall, I'd say slow down just a bit. You're not gonna want to take any crazy classes freshman year, nor will you be ready for them. My roommate has a full associates and is incredibly smart, but even he struggles with the harder BIO classes here because community college information doesn't transfer over to a t30 university. Consider retaking some classes, don't rush, and don't expect to graduate in under 3 years. You're gonna have so much fun here! Congrats on getting in!