I think I'm going crazy!

I just adopted, sight unseen, a couple of kitties. They're 6 & 7 yrs old and their mom has to move away and is unable to take them. I agreed to the adoption not even seeing the kitties, but I was told one was a "big cat". I was told he was "big and overweight"....well he's big alright, 18 pounds big! But structurally he's not that big a cat! He's long, but short....and you can tell by his face he shouldn't be more than 10-12 pounds.

OK....the crazy part? I'm looking at PetSmart online for cat food for overweight cats.....and I found myself thinking LC....."ok, this one has higher fat and protein, less corn and rice...."

hmmmmm I wonder what the vet would say! LOL