Guldal, I actually have a 4th plant from 2018 that's in growth mode rather than blooming mode.
The GH is of reasonable size for me, 14ft x 32ft and 12.5ft to the peak. The 2 outside benches are stacked. Meaning they're 3 or 4 benches on top of each other increasing my bench space considerably. With that said, only the top benches or the center row of benches have enough head room for long flower spikes. Not a problem so far.