He's worth probably taking a flyer on him. Then again, I'd probably never roster Beasley in any format.
Lin should get a decent run as a starter in a D'Antoni system. Competent PGs usually do pretty well in his system (see Ray Felton first half last season), but with Melo and Amare, you'll never know with who the ball stops next. He's worth a swap for Beasley though, his upside is much better.
need help i got Rose but he has been hurt my other PG are John Wall, Westbrook, and jrue Holiday... dont know if to sit rose and if so for who?
You in like a 6 team league? I'm guessing this is a weekly league and by the looks of things I'd probably go with Westbrook, and hope that he actually learns to pass. Holiday and Wall have much more inconsistent scoring/assist numbers.
Should I even bother with Lopez/Z-Bo? (both available in my league)
One thing I would consider is trading 2 of your guys for a more premier player (e.g., Wade + Humphries for Lebron) and then picking one of them up with your extra roster spot, but I wouldn't drop anyone on your squad outright for ZBo/Lopez.