Sounds like it is a big enough space that there should be room for everything. I hope it works out for you. Good luck with the meeting. It will probably take a bit for it to sink in. I've had clothes where I never took the tags off. I bought them hoping I would fit into them one day. Never quite worked out for me...
I hear you I have a few shirts and pants in my closet that no longer fit, but did at one time. However, they were worn at some point. I just need to donate them because I doubt they will ever fit again.
We are lucky that my brother in law manages a store that sells items to needy people and then they give food away too. It gives us a good place to offload the stuff we don't want or no longer need.
That is cool. We have a few charitable places around here we usually donate to.