2) With Bittrex shutting down, many users are left wondering where they will migrate their activities. Have you made any decisions regarding your future exchange of choice?
Migrating to anothee exchanges does not guarantee success. Exchanges are alway a try and error attempt. which you will never know the next in line. My advice is just to only focus on one CEX. all your Coin should be on a DEX wallet. Whenever you need to sell your coin, you can send an amount you just need to spend to CEX and exchange it rather than hording it in a centralized Exchange because there is a higher risk in CEX than DEX.