Since there has been rumors that the Celtics might trade Ray Allen, I think it would be okay to use Alston, Pietrus, and maybe a draft pick plus some cash to get Ray Allen. This will give the Magic a top shooting guard and more choices from beyond the three-point line.

Yeah....:) since the question is asked with the condition that the players are in their 'best' condition. Arenas has a pretty nice height (for a PG), enough power, knows how to pass, and is deadly from anywhere on the court. I think having him as a starting PG will be more energizing and relieving for the other four guys on the court. I think ...

I would go with: PG - Gilbert Arenas SG - Michael Jordan SF - LeBron James PF - Tim Duncan C - Kareem Abdul-Jabar Bench: Pippen, Ray Allen, O'Neal, Garnett, Larry Bird, Magic, Isaiah Thomas