I'm going to end up with two sets of one male and two females.
There are may problems with breeding trios you may want to research before setting up a breeding program this way. It usually only works if the females are twin sisters that have always been together.
Unrelated females are more likely to have dominance issues over their male companion. It is more likely that one female may pull the other's joeys and kill them. There are more joey losses in breeding trios than with a pair.
It is highly recommended that you own and care for pet only gliders for at least a year before you jump into setting up a breeding program. This will give you time to learn more about the care gliders require in general. Handling gliders and bonding with them takes time and patience. Learn to be comfortable will all aspects of glider care including nail trimming before you begin looking for breeding pairs. You need time to learn more about glider behaviour, signs of illness, and just day to day management of cage cleaning etc. You will also want to establish a relationship with a knowledgeable glider vet and to locate one that is qualified to do home inspections of your facilities when you reach the point that you need to be USDA Licensed.
Keep in mind that once you get up to 4 breeding pairs you will probably want to apply for a USDA Breeder's license. This will add a good bit of paper work and record keeping to the care of your gliders.
The expense comes not only with having multiple cages and all the equipment needed for each breeding pair but also an up front investment in gliders that you have obtained lineage for - and have compare the lineage of the gliders you hope to breed BEFORE you purchase them and introduce them for breeding. This is where a mentor can help you choose well matched gliders to pair for breeding to reduce problems that can come up if the gliders are closely related.
You will probably pay more for gliders purchased with breeding rights than you would if you are just purchasing pet only gliders.
If you want to breed - start out small with one or two breeding pairs. That will be 3 cages - two for the breeding pairs and one for your pet only gliders (unless you purchase two females and then separate them to pair them with males after a year) See how much work is involved in managing 3 cages - then you can decide if you want to add an additional cage for another pair.
You will need to recognize your own limits for the number of cages you can manage.
Should I make their breeding cages into their permanent home?
YES what ever cage you choose for your gliders breeding or not will be their permanent home. They still need lots of room to move about and a glider safe exercise wheel to run in and lots of toys.