At seven months he is still growing and needs lots of extra nutrients and calories. Are you feeding him a kitten food? How much dry food along with two pouches?

I have a ten year old male who eats two pouches plus about 1/8 cup of dry every day. A kitten would certainly need more than that.

If he does not appear over weight, add some more kibble, or another pouch, to his daily quota.

I am always for getting another cat in from the shelter! As long as they are both neutered, it doesn't matter much what gender you get.

Most cats don't take to each other right away, it takes cats time to get used to any sort of change, and cats are very territorial, but in time they will be very happy together.

I prefer multiple cats at all times so have done many integrations !