A few things to take in consideration
1 Once your BP are adults it will be easier and more convenient to feed a single prey which make rats a better choice.
When it comes to breeding mice have a stronger odor but it can be controlled.
Rats cannot be kept in a 10 gallons tubs and even mice will rapidly be over crowded as they will produce every 3 weeks.
When you want to consider breeding my suggestion is to build a rack that fit your need (breeders, weaned animals, holdback)
Remember that rats have a rapid growth rate and since your litter will average 6 to 12 babies and you only have 2 snakes I would suggest to switch your snake to F/T, and euthanize rats when they reach proper weight so you never have rats that have outgrown the ideal size.
I breed both but I also breed snakes so having mice is essential for me to get hatchlings started, in your case you need to consider everything.