Okpala seems to have locked down a roster spot, if not a starting role. I'd swap him for Metu in your list.
And if I were making the decision, I'd keep Moneke, Bazemore, and probably Dellevadova.
Merrill is a candidate for Stockton, I don't have a strong preference between Cook and Delly, but I think Delly has the edge at the moment, and as much as I want Metu to succeed, he's a tweener who can't defend at C or on the wing and isn't good enough offensively to offset that issue.
Plus I think having extra wings is important.