is there a sensible way to choose a domain name?

Say it out loud to someone and ask them to type it. If they hesitate over the spelling, a hyphen, or whether it's 'for' or '4', you'll lose everyone who heard it in conversation rather than saw it written. And get the .com if you can, people type it by default.

short and brandable beats stuffing a keyword in. exact match domains stopped being an advantage years ago and they age badly if you ever widen what you do. check the name against trademarks and grab the matching social handles at the same time.