Bike Setup?

In 2012 I decided to take the plunge and do my first tri. I bought a 2012 Trek 1.1 road bike from a reputable shop nearby me. The bike has served me well and was used in my one and only tri. I put right around 1000 miles on it in the first year. In 2013 I did not do any tri's as life and work got in the way of any free time.

But in 2014 I have rededicated myself to doing a series of mini sprints. This has motivate me to keep up with training but not required a lot of time to train per week. With that, now that I am spending a consistant amout of time on the bike again, I have some slight comfort issues.

When riding It seems that I have more power and feel more comfy if I sit forward on the end of the seat. More comfy except for sitting on the nose of the saddle. When seated in the middle of the saddle and hands on the bars it feels a little bit stretched out as if I am reaching just a bit too far.

I was wondering if geting seat post with a different angle (forward a bit) or a shorter stem (moving the bars back toward me a little) would be worth it.

I am between 5'11 and 6 feet tall and am at 227lbs (Im a larger guy) and the bike size is 60cm bike. Other than that the bike suits my needs. I use it ofr a short occasional tri and also to bike on the bike trails with my wife, so Id like ot keep it for now.

Thanks in advance for any advice.

Tom