Get aerobars. Mess around with seat positioning. RACE! Race some shorter tri's and an Oly or two.
Then evaluate. Were you comfortable? Are you aero? How is the leg positioning while areo? What are the limiting factors? Generally it's the motor, but sometimes it is a swim that sucked and slowed you down all the way.
I wouldn't invest in wheels for this bike if it has decent road wheels now. Save for a dedicated tri-bike a year down the road. There are a number of threads here and elsewhere that describe the incremental gains to be had with positioning, wheels, aero-bikes and aero-helmets. But, a year from now you will finally know enough to make your own cost/benefit decisions and come up with the bike that is right for you.
My own decision is that my 1991 Merckx Super Corsa MX-Leader with Profile Design aerobars is a good compromise. Night and day improvement over my 1969 Peugeot, but useful as a regular road bike, too. Did a crit on it last Wednesday and it was fine there, too.
Tri's are FUN!
TysonB
Cushing, Oklahoma