That's not really too much if you consider it's nice to keep spares around for cleaning/change outs. I do fleece weekly, well at least the highly used stuff like their sleeping pouch and pieces I have under their feeding dishes.
Knowing the Madagascar cage fairly well, you can fit quite a bit in there, but don't need all you have at one time. Changing out will give you a little diversity and also help sets last a bit longer alternating usage. Since you mentioned that they're similar, you may even want to mix & match up pieces if they're color coordinated.
Here's a suggestion:
At least two sleeping items, they can be two pouches
, but I personally think it's nice to offer two different styles, they can choose preference. Mine usually prefer the pouch, the deeper the better for long daytime sleeps, but little napping during the evening they may check out another option, it's there for them anyway.
You could actually have about three sets to change out with what you have when adding the wheel and other toys
Sleeping accommodations could be: 2 pouches
, 1 pouch and the cube, or even 1 pouch and the parachute pouch.
If the parachute pouch is a basic square with four corner hooks that can also be used near top of the cage more open like this. Even a wide rectangle can work this way.
Now for your corner hammocks, they are great to have, you may like to use one or two some times, and others maybe even 3 or 4, most likely most of the time you'll find 2-3 are plenty at one time. I personally just started using them in the past year or so.
The bridge and the fleece vine, I'm guessing the vine is a fringy one? they can be stretched across the cage straight, diagonal or even just hanging from the top of cage. I sometimes hang one down one corner in the front. The bridges are cool to use as well. I love using those and most of the time have one and sometimes two in the cage.
I also recommend getting some fleece that coordinates with your sets or matches them, and you can make some braided fleece vines. You can even make several and make a braided fleece ladder that will span the cage as well. Mine isn't refined, but it's enjoyed when in the cage.
This was actually taken in the Madagascar cage I had. Hey and so is the one just above.
So that pretty much covers ways to stretch your supplies, giving you lots of options and change outs which makes cleaning easier and extends life of your sets as I mentioned.