Well as for SF I think staying back an extra year will definitely help Barnes out with his development. I havent watched much NCAA the past 2 years really so I cant really comment on how well he is this year other than just read on reports.
But somethings I do really think is a better choice is to:
1. Trade Davis + Barbosa + future 1st for Rudy Gay/Andre Iguodala/Nicolas Batum/Marvin Williams (more developed SFs would benefit more imo)
2. Considering we are late lotto I say we pick up BPA or a PG
the traditional PG + a Big is always crucial in winning championships but I think Calderon
can hold his ground for 1 more year as a starter or maybe even Bayless