Bike Fit / Aero Bar Guru's - Help plz

So i ride a javelin sizzano (76 deg seat angle).  Its a 51cm frame, and i'm 165 lbs at 5'9 with no shoes.

I just recently lowered the position of the arm pads to have a more aero position, which is now requiring a total readjustment of everything on my bike.  I read this article for positioning issues, when i came to the conclusion that my aero bar extensions are all wrong for me.  In order to have the pads fit directly under my elbow, i would need the bars to be longer.  If i pull out the bars any more, they will fall out of the clamps.  These are hte bars that  came on my bike.  The tripple bend stuff i think is really stupid, and i wanted to go with somthing much more aerodynamic. 

I had the idea of just getting new bars, such as these, but then i realized that i would need different clamps in order to hold the pads, because as of now, the pads screw directly into the aero bar extension (the holes can be seen here).

I was also wondering if the following bars would work on my oval cowhorns... http://www.excelsports.com/new.asp?page=8&description=T2+Plus+Aero+Bar&vendorCode=PROFILE&major=1&minor=36&site=qbikehttp://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=130318456302


I'm pretty tight on money, so i was looking for the most cost effective solution for me.  I definately need different aero bar extensions, but i'm not sure which direction to take.

I definately need room for fore and aft adjustement of the aero bar extensions so that i may have a proper fit on my bike.  I might need a new stem, but i'm not positive on that either.  The stem i have is an oval concepts stem that also came with the bike.

If the bars above won't give me exactly what i want, i was just thinking about going with these...http://www.bikesomewhere.com/bikesomewhere.cfm/product/568/5347/32414?qb=1

http://www.texascyclesport.com/store/viewItem.asp?idProduct=3600

http://www.nashbar.com/bikes/Product_10053_10052_503275_-1_10000__10001


also, Whats the difference between all the aero bar extension types?  I'm guessing the straighter it is, the more aerodynamic it is, and the more bends it has, the more comfortable it is??

Edited by funkyd04 2009-07-24 9:35 AM