Like stated earlier..You are buying a Drone that DJI no longer supports...Thats NOT a problem and actually means that you will have a better chance getting any needed parts for it in the future.
I say Good Purchase and I bet you will love every...
The Mavic 2 pro is eight years old and not supported by DJI anyway.
Neither of those is true and neither would make any difference to an 8 yr old second hand drone anyway.
Not at all, except for overpaying for an old drone.
Sounds like you are good to go. Now you should read up on the rules of where you can and cannot fly to avoid getting into trouble. There's a ton of info here if you seek it out.
It's much better outside, don't forget to always wait for a gps lock before taking off. The other super important thing is don't start near anything that will cause magnetic interference. No concrete with rebar or wire in it, which is basically...