First Snake: Am I on the right track?

[prairiepanda]

Yeah, if I rehouse her I'll be getting a plastic enclosure. I just like to use the aquariums for size reference, because they have standardized dimensions.

I'm wondering if she's a bit overweight. Seems like I'm seeing a lot more skin between scales than I do on photos of healthy kings. I tried to post a pic, but kept getting "post denied" because of the URL, so...maybe somebody can give me some advice just based on my description? I see skin between scales when she is in a straightened out and relaxed position, not just when she's curled up. And it's not just the lump where her food is either. Her whole midsection is like this to some extent(around the head and tail looks normal). If you think she's overweight, what would be the best solution? Smaller prey, or less frequent feedings? Her previous owner fed her every 7 days exactly.