My name is Charlie!

This guy was a stray/feral kitten that showed up in our yard. We have tamed him and recently took him in to get his vaccinations, neuter surgery and fiv test. He is very healthy and sweet. He has taken to domestic life and deserves a home; we don’t want to put him back out on the street. Our resident cats, particularly one who is himself a former feral, have been extremely unwelcoming and I don’t think we are going to get them to get along. Charlie is not the aggressor. He is very docile and mellow. Will someone please help me save him from a short life back on the street?