I think it's going to be Stefanik. Trump doesn't need help from the right, he needs to pull in the moderate Republicans.
And I think he's actually too racist to pick Scott. He might phrase it more like "he doesn't look straight out of Central casting" but that sort of thing is important to him.
This presumes rationality that is not there. He's a being of pure emotion. He's not going to repeat the process that brought him a VP that ended up failing the loyalty test.