Lots of paranoia plus crossing of t's and dotting of i's.

What is your paranoia ?

People gave you some advice and below is a guide from LoyceV, that you should read

Transaction fee

There are weekend and hourly effects so please make sure to have plans for your transactions
Check details with Guide to check fees: Taker, maker, deposit, withdrawal, transaction fees (Read the bottom part and hyperlinks). Weekends have effects on transaction fees with both Bitcoin and Ethereum. Sundays have lowest transaction fee and lower than Saturday, in average/ median. Hours from 0 to 12 UTC usually the best time to get cheaper transaction fees.