How long do you wait to handle bp after feeding

[snakesRkewl]

I also offer food twice a week. feeding this much you have to remove them from their tubs so you can keep the tubs clean.

Yep, no way around it.
Handling them for 10-15 minutes sitting in a chair relaxing won't hurt anything, people can do whatever they like as far as handling, but I'm getting tired of the old rumors about regurgitating because of handling.
If you deal with wild caught highly stressed out snakes then the handling rule might apply.
95% or more of us are working with captive bred snakes that are typically not going to go into fight or flight mode.