I don't know,...I have 7 and I guess to me it's like children. You see those shows where people have like 12 or more kids and you think, "Oh my, how do they manage?" But to them it's the norm...they just do it.
Gliders are the same way... they are all individuals so it's not like you're dealing with cookie-cutter animals. You will fall in love with each one seperately and learn to know and enjoy each of their little personalities. Obviously you'll multiply your food and possibly kitchens but IMO it's just as easy to cook for 7 as it is to cook for 1. Getting them back into the cage after playtime takes skill for me but it doesn't take long to learn. They have free reign of my bedroom for playtime so it's a vast area to round them up in, especially if they don't want to go back into the cage but they all have their favorite places to try to dodge mama & I've learned them all so they can't hide for too long. And I've learned that Zoey & Ariana are my big escapees...I made the mistake of putting them away first once,...cuz of course they are the ones that will run to me and climb right on so I took them in and got them in the cage, but when I came with the others, obviously I had to open the cage to get them IN which was Zoey & Aris' invitation to jump back OUT! Yayyyy fun times! LOL! But now mama's smart enough to put Zoe & Ari away LAST!
Within a few weeks you won't notice a difference and you'll probably wonder how you lived life without the little darlings in it.
I'd be careful intro-ing a lone glider to an already established colony tho but that's another topic.
Congrats!