Look at those massive roots! I will take a pic of mine and post for you. 50% shade for this guy. I fertilize every morning give or take a day all year round; keep in mind I am in a tropical climate. When it is hot however, fertilizing daily or every other day is great for it; make sure to soak/drench with water first so you don't get any salt buildup from daily fertilizing. Everything else sounds just about right for how you're growing it.
By the way, its called V. Manuvadee*