Build is looking great! Really like the clean and organized set up.
I basically have the exact same size tank as you and was starting my build exactly one year ago. You’re going to love it.
Seems like you have plenty of room. Did you consider placing the sump somewhere other than under the stand for ease of access and maintenance? I placed mine on dunnage racks to the side of the tank in my fish room and it makes for super easy access. No more reaching under tight spaces :)