Glad to hear that your Nishikawa is doing well in Palm Beach Gardens. I am in Boca Raton, so roughly the same climate as you. I bought 6 3gal avocado trees last year - Monroe, Catalina, Nishikawa, Fuerte, Lula, Wurtz. My Nishikawa looks like the weakest of the lot - no bloom, no new growth yet. The Fuerte, Lula, Wurtz, and Catalina all flowered and set many fruit (which I won't leave for long). The Monroe started to flower but seems to have stalled in a kind of mini cauliflower stage.
My goal is to try for year-around avocado availability. I still have a couple of planting spots, so I'm hoping to score some super early cultivars to cover February through June. Hopefully a Kampong, and maybe a Doni or Simmonds. I'm open to suggestions!!!