Hey friend,
I usually keep at least 1 hole in my cups over the seedlings to keep some air exchange, and also let them breathe for an hour or 2 each day. I wouldn't worry about giving them an active breeze until they've gotten a 2nd set of true leaves, so a few days,maybe a week.
right now just keep giving them some quality light, the high humidity and warm environment.
Even if you chose to wait until they got into the greenhouse I don't think that would be bad.✌️