Any advice on introducing rabbit to other animals?

[KeganO'brien]

I just recently bought a few year old rabbit. I currently live in a small condo, so letting him roam free in an enclosed room without any other animal is impossible. My family and I are moving into a house sometime next month, and I'll have a basement room, so I can very easily keep that door closed and allow him to venture all over my room. Right now though, I don't want him locked in his cage all day I want him to be able to walk throughout the house and not just the bathroom (where he is now). The problem is, I have three dogs, and four cats. Now, I just one by one brought a cat in the bathroom to see how they would react. Two of my cats smelled him on the nose and actually seemed more fearful of him then I would think. Another cat saw him, didn't care, and moved along. My fourth cat was as well afraid of him, but my rabbit stomped it's back feet, expressing his anger which I'm assuming is because he didn't want to be around these cats anymore. I guess I'm curious as to better acclimate my other animals with my rabbit so I'll feel comfortable with him walking around my house (supervised, of course).