Nice jog! I left you a comment over at SA

Great article. My Q wasn't keen on other cats introduced into the household. Was a foster cat home, so he always seem to know they would leave eventually. Now that he is gone after 18 years am still trying to adjust without him, so can only hope will have another cat someday. Thanks for helping me move a bit more forward. ^_~

Jeez, 4hours!! still it kinda shows your commitment right there! Never mind TWO YEARS to get them to like each other! Was your name Theresa (mother) in another life lol.
We only had 3 cats at once, once if that makes sense! And they were acquired at different times. That was when we were living in Africa, but we were fortunate and they all got on straight away. FYI we also had 1 dog who managed 13 pups over the 3 years we were there, she was NOT a lady lol! kept escaping and coming back preggers! Then there were the 13 chickens and a monkey!! Loved the post, but I think you gotta cut down on you writing time....check out this post by Kyle and give it a go:
https://my.wealthyaffiliate.com/wa-affiliate-program/are-you-a-writing-machine-your-power-writing-results

here's what I came up with! in just over the 30 min mark!
http://howtoearnincomeonline.com/the-importance-of-keywords

Hi.. I like the way you intro new cat to the household. Is good if a family do consider adopt or rescue another 1 cat to keep the exsiting cat company.