Hi, I'm building up a Cervelo P2k tt bike and I'd like your opinions
I believe this bike is an '02 but correct me if i'm wrong

Situation:
I have a Dura Ace 7700 9spd group from a road bike with SIS shifters
I also bought a set of carbon wheels with a 10spd SRAM cassette on it

What would you do?:

1) Sell the SIS shifter and buy some bar end shifters for the 9spd group?
2) Just use the SIS shifter you have?
3) Sell the group and buy a 10spd shimano or sram group to fit the wheel?
4) Save the 7700 group for a road bike and buy another group for the Cervelo?

I've currently spent $750 on everything and would like to keep cost as low possible (college student) so keep that in mind.
Here's a picture of the bike, dont mind the random cables

Thanks for your help

Update: 11/19/10
I finished up the Cervelo today! As I stated below I went with option 1! Sadly the I didn't used the Mercury wheelset but I found other wheels for a sweet price. I also moved the water bottle down, barely fitting there but it looks good. All that's left to get is some bar tape. Here's the breakdown of the various parts and costs.

$250 Cervelo p2k Frameset
-Frame 51cm
-Wolf fork
-FSA Headset

$55 Dura-Ace Components
-7700 Front Der.
-7700 Rear Der.
-7700 Crankset 56/42
-CN7801 Chain

$50 Time trial bar
-Vision Alloy base bar
-Profile Design T2+ aerobar
-Profile Design QSC brake levers
-10 spd shifters
-Fetish Cycles Carbon stem

$150 Wheelset
-Carbon Fetish Cycles rear
-Sram Pg 1070 Cassette
-Trispoke Clincher front

$60 Fizik Tri2 Arione Carbon Braided

$20 Conti/Maxxis tires+tubes

$5 Profile Design water bottle
_______________________
$590 Total Cost

Here she is: