After feeding my guys, I wait no less than 20 minutes from the time they have completely swallowed before picking them back up. I have a few snakes (2 baby
bci and 2 baby burms) that I leave overnight with their dinner.
As far as aggressiveness after feeding, I have never had a problem with it, not even from my retic (well, once, but I think it was more the smell of my hand lotion, not an after feeding aggression.)
Give your snakes time to get their food down and then settle down a bit, then it should be safe.
Best wishes for your first feeding!
[addsig]