Mice or rats don't make a difference to me. I'd like to stay with frozen/thawed since that's all he's known his entire life.

On another note I picked up a digital scale and he is exactly 334 grams ( 325 estimate was pretty close )

I like the idea of the 10-15% of bodyweight per feeding. I guess i'm still curious about multiple smaller prey vs 1 larger prey. Sometimes he'll eat the second mouse, but other times he'll reject it. For example 2 weeks ago he didn't eat, then 1 week ago he ate 1 mouse, and this week he ate 1 mouse. So over the past 2 or so weeks he's eaten 21g of food... If larger prey is the answer i can try next week, just looking for some advice Don't want to have a mal nourished snake nor do i want an obese snake.

Thanks for the input guys!