Time to offer bigger meals?

[Spirit_Scale]

I think it's time to step up my boys prey sizes as now everyone has settled in/begun feeding so I feel comfortable changing things.

Both (male BP and male BCI hoggxcolumbian cross) are currently eating medium f/t rats once a week. The BCI came to me eating f/t mediums on what frequency I don't know...and I've noticed that with weekly feedings he's shed twice in a month since he's been here. I wonder if he's not going to grow a good bit despite being an older snake.

The BP is about 4-4.5 feet long and weighs 1415 grams---he's just recently gotten into feeding well after we had a feeding issue and has bulked back up. He's at his widest point about 2-2.5 inches thick and tall. He'll be three years old in January.

The BCI looks like he needs to put on some weight (rescue and recovering from an abscess, mites and what looks like worms---getting these treated) is about 5-5.5 feet long and weighs about 2200 grams. He's not as thick as the BP however. I don't have an exact hatchdate but was told he was an '02

Using the 10-15% bodyweight of the snake = prey weight rule the BCI needs to be stepped up for sure, the BP depends on if I want to go by 10 or by 15.
Using the 'leave a slight bulge' after feeding rule they look like they're on the cusp of needing to be stepped up, as it's a small lump but am worried the size jump would leave too big a lump.

I was thinking of stepping the BP up to a large rat and the BCI either a large or extra large.
I know some people feed smaller/less frequently...but while I don't powerfeed or want to overfeed I believe in weekly, good-sized meals and allowing the animal to grow as big as it is supposed to be given optimum environment.

Thoughts?