Cycle Recommendations...I think?

I spent under 1K for my bike a couple of years ago and still ride it.  There are plenty of different ways to spend your $$ when it comes to this sport.  My advice is to give this bike a bit longer than a month before you start thinking about upgrading to a new ride.  Give it more time then you'll know which way to go.

My $0.02:

Giant is a real value champion.... good frames and good builds. But at 900, you probably could get a huge benefit from better wheels .... not necess a carbon race wheel, but a Shimano Ultegra, Neuvation R28, Mavic Ksyrium, etc. Easy to see where the $300 to $600 goes to improved performance here. Chainreactioncycles.com and Neuvation and bicyclewheellwarehouse and your LBS are great places to look for wheels.

And you probably have an aluminum seatpost. A carbon post will be lighter, and absorb road shock.... will create an all around better ride. So consider a great saddle (try some out, maybe demo TEN saddles at a time from Competitive Cyclist or try a few from your LBS) and a good carbon post. Make sure the offset (ie setback from straight) on your post matches the fit you need for your frame.

Then, a better crank, chain and cassette.... after 1500 miles. Any earlier and you are wasting your OEM group.

But don't spend any more than about $900 ... or you start looking at what $1800 could have gotten you.... though your hoops, post and saddle will work great on your new bike down the road.

I am not a big fan of real tri bars on road bikes... but a lot of people do this... and some bars like the CGT from Profile are made for road bike geometry (and keep your weight back a little further over the rear wheel, improving handling in aero tuck position).