How often are you feeding your snake? Maybe you mentioned that, but I didn't notice it. If he is about 225g, then you should be feeding him every 5-7 days.

I probably wouldn't go with more than 15% of his body weight at one feeding. Do you have a Petco or Petsmart nearby? They usually sell frozen. That way you could try out a few before putting in a big frozen order online (almost neccessary to buy in bulk to defray shipping costs).

Or, you could buy 4 or 5 mice at once, and freeze them yourself. I think there is a sticky on here somewhere about humanely euthanizing mice with a cooler and some dry ice.

Either way, I would definitely recommend trying to get him on frozen. Safer and definitely more convenient.

I was very lucky and my BP ate frozen the first time I ever fed him (even though he had been eating live for the breeder).

Hope this helps.

Good luck!

-- George