Boston Terrier Breed

So here's the deal. I am in the middle of a divorce and will be taking custody of our two Great Danes. One is a 3 yo spayed female the other a 2 yo neutered male. I am moving into a new house with a new roommate who has an 18 mo male Boston Terrier who is also neutered. The Danes have been indoor/outdoor (mostly indoor) and the Boston is crate trained. I've read all the articles listed on YA about introducing dogs to one another and the most common answer is to do so in a neutral place. This new home will be neutral for all parties involved and has a massive fenced backyard. We have devised a plan to keep the dogs separate if necessary due to our work schedules and the layout of the house, but obviously we don't want to make this harder than it has to be. Can anyone offer any advise on how to properly introduce them? Any advise about the Boston Terriers breed traits would be helpful for me!

I'm not sure how friendly they are, but when i done this with my 2 males and female bull terrier…I made my husband come on lots of walks with me so they got use to each other until taking them into the backyards, Take 2 at a time but make someone goes with you in-case something breaks out, make sure you correct the eye contact between them. took me about 3weeks but now the 3 all get along, at the time my new male was 3years old so it was alot of work.
Goodluck.