As many as you want- again don't overwhelm or overwork yourself it's meant to be fun designing, not stressful <:)

as many as you want,, but I woulld say like..(since you say its easy for u to make them) maybe 12

5?

maybe you can find key words and make like 5-15 adopts based on that one word. idk but maybe doing sets of 10 or even 15 would be cool