Carlos has the advantage of growing in 10B and you have the advantage of growing in a greenhouse in a climate controlled environment. There are a lot of California and 10B varieties we simply can't grow here in Florida 9B more often more due to COLD weather not just the heat/humidity.
How often do you go below, say.....26F? I assume you missed it but back in Jan. 2018 I had a heater failure. Outside air was 13F, inside 18F. I thought everything was dead as it was a greenhouse floor of dead leaves. The citrus and all of the avocados made it, including the Reed. Lost my precious cocktail mangos, most of them Zill varieties. 7 mos. later the Reed was going nuts, as is everything right now. I expect a very heavy crop of everything next year - avocados, mangos, citrus.
Feb. 1. Reed was cut back to 3 stubs.
7 months later, Oct.
Record low here in SW Florida 9B is around 20 degrees. We even had snowball fights here 25 years ago.........
Well said regarding the microclimates. I think it was the heavy canopy and mulch micro climate that got my trees thru that ultra hard freeze. That and THE most important factor - they were acclimatized, subject to mid to low 30's for a few days prior. What kills us in Texas is these wide temp swings brought on by Arctic blasts. 80F one day, 25F the next morning.
I have a friend in Houston that has a 16' cocktail mango tree. Fruits well and heavy. He has a PVC rig to protect them come winter.
Good luck!