I feed live to my BP - Convenient and fast for a large collection, a few (1 to 3) animals eat F/T so any surplus of rats that are euthanized can be used as well.
I mainly feed Frozen to my Colubrids as I always have a huge surplus of mice.
Bedding depends on a few things, animal and time of the year.
I used aspen for all my animals except females that are being paired (those are on newspaper) or about to lay (those are on mulch)
Bottom line DO and FEED what works for you not for others, just educate yourself and experiment.