wow!! congrats
sounds like you are very prepaired
personally I prefer trio's rather than pairs.
The reason is, if you lose one of the gliders ( by passing away,not literally losing one ) you still have 2 so your not having one glider grieving alone. The two remaining gliders comfort each other and the loss isn't so hard on them.
Considering their lifespan if you have a pair for 8 or 9 yrs ( hypothetically )and lose one of it's a substantial loss to the surviver and at that point in their life it may be difficult to find a cage mate the survivor will accept. And if the survivor accepts a new glider then your looking at the same scenerio repeating itself when the older glider passes.
My combinations as of right now (things can change at any time lol ) are 3 cages
Cage 1 has a 4or 5 yr old female, 2 of her offspring one is a little over a yr old and the other is turning one on easter, 2 carmel brothers a little over a year old.
Cage 2 a 4 yr female and a 6 yr old male They were in a trio but we lost their cage mate Pico. And this pair seems to do better as a pair. If something happens i can always put one of them in another colony.
Cage 3 5 yr female 4 yr old male ( i think ) and a almost 2 yr old female
All males are neutered.
I once had a colony of 6 ( some of the gliders above in one colony) That I found was a little more difficult to really get a good connection with some of them that weren't already "bonded to me" because lets face it all they needed me for was giving them food
they had each other to cuddle and love on.
Trio's are more manageable than 6 (for me ) and I feel the bond is there and just as strong as if it were just a pair.
The two carmel boys in the first cage are still not "bonded" to me but they are with gliders who are very calm and mellow and 2 were raised by me from birth so their trust is instilled into them which rubs off on the newer boys. Which was part of why I put them in that cage.