Holloway is a top-end filler for a Cup contending team, but not a main core offensive piece. I'd take Dubois before Holloway, but would add Holloway as a depth addition, role player, a bit like Lehkonen was for COL, when we are ready to contend.
Holloway can play a heavy power forward role and has shutdown ability. Plus, he can be a playmaker. Kid can play Center or wing in various roles.
He could become a valuable role player, or a complementary piece with shutdown acumen for a dynamic offensive duo.
I like Holloway, but he's not a primary target for now -- especially not at the overinflated price ARI will surely want.