First of all, welcome to Pet Talk Rosethecopycat! You own my two favorite breeds of cat! I own one 14 year old female cat who has never wanted another cat to share her house. From what I have heard here at Pet Talk male cats seem to get along better in multi-cat houses. How old is your Mr Jones? It seems that younger cats seem to adjust better and more quickly to newcomers. Krazyaboutkatz may have some good advice for you, she has 3 handsome male cats who get along well.
I would love to see any photos of your cats if you can post them, they sound wonderful!