Seem alright? Weights... Poop... Size...

[EL-Ziggy]

Try to feed on a consistent schedule. You are at 6, 10 and then 5 days. See if that helps consistent feeding response and solid growth.

I don't see any problems with the OP's feeding regiment and it doesn't seem like the snake is refusing food or not growing well. I often vary the feeding frequency and prey sizes for all my snakes. My young kings would eat every 5-7 days on average for the first year, every 7-10 days for the second year, and every 10-14 days as adults. I will say that if you want to see quicker growth get the snake on rats if it will eat them. All of my snakes grew faster on rats than they did on mice but my kings were pretty finicky when it came to eating rats.