Well don't forget to take pics of the process! I have a HUGE fetish for organizing! LOL
I say the first thing you need to do is assess what you REALLY need and what you CAN live without. Don't keep clothes that do not currently fit or flatter you. There is no point even if it was a gift!
If you set up a pandora account and/or a netflix account you can listen to music and watch tv right on your comp and then can sell off your cds and dvds except for maybe a dozen of your absolute favs!
Next set up organizationally functional space. Put things that are the least used in the hardest to reach places. Put the most frequently used items in the easiest places.
I would definately consider asking about some near the ceiling storage shelves. This is a pic of my previous cage before I moved to my current apartment...
I store a LOT of stuff up on those shelves. I still have shelves they are now in every room of the apt but now there are 2 rows! LOL
I no longer have my cage on the tables I have a cage stand now.
This is my current cage:
https://www.guineapigcages.com/foru...-i-gonna-completely-rebuild-cage-again-i.html