I would not use all four shelves, and maybe only one or two ladders.

I would use 2-3 shelves and swap the number of shelves every so often.
I have a DIY kitchen that can't be hung, so it needs a solid surface, so I have to use at least one shelf.

I also made the mistake of buying poof pouches, rather than ones in which they can see me coming from when I adopt them,
So I have to hang the poof pouches so that they rest on a solid surface, so that the opening of the pouch is facing the front of the cage
so that when I first get then I don't scare them when they suddenly see a huge new scary face peering down at them without much a visual warning.
(That's just for the first month or so till they warm up to me)

I believe they would have plenty of space to glide since the shelves are not the full depth of the cage.
I would have them also mainly positioned closer to the lower half of the cage, with more gliding availability towards the top.
Is that still ok?

I've heard they need some platforms, as climbing the side bars all the time cannot be so great in the long run, and also just a place they can stand/sit or whatever they do
Correct me if I'm wrong with any of this
(also no need to apologise for the late reply I understand )