Snakes are the best... and having a good setup and a nice routine does mean that having additional snakes becomes easy enough to assimilate into your collection.
But I could not caution you enough about getting a strong QT in place, especially if you know where your weaknesses are.
Some of the concerns with a BP (or any snake) can take months to appear... so bringing together two healthy looking snakes can be disastrous. And if you are planning on increasing your collection especially (emphasis!) if you have a mixed collection.
I keep mine apart for a minimum of 60 days, 90 preferred, even with established snakes I do not cross contaminate, and follow universal precautions between handlings, during cage cleaning, etc.
The only time my snakes even see another snake is during breeding. Even then they have the water dish removed to prevent the spread of RIs VIA a shared water dish.
RIs and other problems can occur individually and spontaneously for the animal, so being out of QT does not mean that you do not follow the same precautions.
Sorry for the changes in your life, but changes are good, keeps us evolving, and therapy snakes are the best. My first snake was a `therapy snake`and he was the best!
Take care,
Bruce