Between everyone, this new baby is going to be well taken care of.
I know that it's never easy to settle someone new into a household with existing pets, but you have made it work before, and I'm sure that you will again.
How nice that he's a ginger cat, btw.
The best of luck on getting all of his health needs cared for, and at finding him a forever home, as soon as he is ready.
Love All Life, Thank You For Posting! :)