I'm so sorry to hear about Ozzie's passing. I know what you're going through because I lost my Pepper in Feb. of last year. I think that adopting another cat is a wonderful way to help you get over your loss.
I knew that I was going to adopt another cat but one turned into two. Now I have four cats and I'm very happy with my fur family. You'll know when the time is right for you. RIP sweet Ozzie and please say hi to my Pepper for me.