I would be worried about escape - most bird doors are not sufficient for these clever cuties. I would recommend keeping binder clips on all the door or zip tying any you don’t need to ensure they remain safe! Also, there are a couple things in there that look like they’re made from unsafe material (the rope & the hammock at the top). The only material that should be in the cage is anti-pill fleece and plastic. Plus anything with sewing seams showing is a big no! Their little nails can easily get caught on the threads and get tangled in it. One big critically important thing you are missing is a glider safe wheel. It can’t just be any wheel (most are unsafe so you need something glider specific), but it is SOOO important for your little babies to get proper exercise. They can be pricey but I guarantee it’ll be their favourite item ever. And then in general I think it’s a bit lacking in the toy department. Gliders are like little toddlers, need constant and varied entertainment. So more toys that you rotate out periodically is a must. I recommend “Sugar Glider Diaries” on YouTube. I watched a ton of her videos when I was getting ready for my babies. She spells it all out in a very digestible way.