Forsoothe!
Imperial Masterpiece
You live in Delray Beach and haven't said the magic words yet, Morikami Museum & Japanese Gardens. If you haven't been there, heaven is just around the corner. That's where you take your camera and get shots from every angle of what you like and then you have an example of all the best results that you can copy. Yes, copy, that is what we do here. We see what we like and emulate the best parts to the best of our ability. Of course, every tree is a living, changing creature subject to the adventures of weather and climate and animals, disease, insects, friends who don't follow directions when we go away, ad infinitum, so every tree winds up being its own critter. But we try to copy John Naka, anyway. Tell us you go to Morikami every week?If you're in a good warm climate or can provide a reasonable facsimile thereof, FT can live quite a bit longer than 4 years. I see no reason for anything different under adequate conditions, given that they often survive in the landscape here for decades. You should be in pretty good shape.
*Disclaimer, disclaimer, yadda yadda individual results may vary...