I think Yelich is a great target and we should put our best foot forward.
I'd have no issues giving up Alford, Warmouth, and a sweetener. I've heard Greene who I would drop in a heartbeat. Maybe he has some value because of the big arm. I'd move him in a flash. I'd love to keep Pearson, but if it closes the deal, he's not untouchable.
I'm a big Bichette guy, but if you are getting Yelich for him on an absolute steal of a contract, you have to pull that trigger. You almost have as much control on him (5 years) as you would on Bichette and he's proven. If things don't go as you hope, you can defs recoup value on the prospect side by trading him.