My advice to you would be to do what I did by using this bar from Nashbar.

http://www.nashbar.com/profile_morei...ku=9756&brand=

I have them on my bike and you can get all the position you would want and then some. Look at my bike closely and picture how you can get into an aero tuck while reaching forward and yet also get a relax position while holding the bar closer to you, and then you also have a bar end position too. And then look at the posibility of braking in front too; that's how mines set up.