Max, your tree looks great. Did you get any fruit set last year? If so, were they normal sized fruit? How long have you had the tree for?
Your tree is really looking good with just minor Powdery Mildew damage on the newer leaves. Your tree is upright and not droopy yet and doesn't appear to have Phomopsis from what I can see. With such lush and dense foliage, I would think your tree will be strong enough to outgrow many pathogens.
What I've noticed is that the larger the tree, the better it can defend itself against attack from various diseases and pathogens.
Please keep us updated with this tree. The trees that seem to perform ok on Florida/Turpentine rootstock are Valencia Pride, Lemon Zest, Alphonso and a few other I can't remember.
Simon