I dont have all answers but I'll try
1. You need a visa from their embassy
2. No coast in MK. Its very centralised, so everything is in Skopje. You have very nuce nature, depends if you want city life or more remote.
3. Not much snow usually, just a few days. Not to cold
4. Cheap properties yes
5. No idea
6. No idea
7. Solid apaprtment with costs is 350eur. Food in supermarket is a bit cheaper then average in Europe. Local food very cheap. Service industry extremely cheap.
8. Not really, birocracy is sometimes slow/anoying
9. Not really, pretty safe I'd say