Once long ago we were in a similar position - but without the luxury of a school!!
Options were: cull dead wood (we weren’t carrying any), hold on recruitment, send noobies to a neighbouring unit or do an extra parade night. No other options presented.
Some years later, RFCA refurbed us. We were instructed to close during the refurb - or, if we found an alternative venue, they would consider funding. To their credit, they did stump up the funds - but we had to do a lot of legwork to make it happen.
My overriding memories of our “peaks” are how much hard work it was!!! We also found ourselves operating at critical mass - with staff running themselves silly trying to support 75 cadets in a sqn built for 40. Streamlining lectures, capping activity numbers and having subflights doing drill as we didnt have the space for full flight drill.
We - for the good of our health - reigned back recruitment and focused on giving high quality experiences to fewer cadets.
Not the answer you probably wanted to hear!