I think all of your questions have been answered many times and it sounds like you've decided on the 10/22. Good choice, but the others are good choices, too.
I just wanted to add:
Don't worry about cleaning, upgrades, etc. It's not hard, and from your writing style it's pretty clear you won't have any trouble finding, reading, and following directions. You'll have it mastered in no time, I assure you. Buy it, shoot it as is, and when you need to upgrade something you'll know.
Have fun and good shooting,