Hi Chelsea;
Wrench Science has a very good fit system online:
https://www.wrenchscience.com/Login.aspx?ReturnUrl=/Secure/Fit/Height.aspx
the downside is that you have to register, and you get almost daily e-mails after that.
Continentals are stiff - which is good, but they are heavy, and thus tiring to ride. With the relatively narrow bars, they also tend to take a bit more shoulder effort to turn.
If you do choose to try Wrench Science's fit calculator, check all the different options: road, mountain, etc, and notice how the recommended width of the handle bars change. Road is geared towards aerodynamics, thus as narrow as possible. Mountain towards leverage, and quick easy turning, and thus as wide as practical.
If your bike's frame is about the correct size, and you have to change and/or move the bars around, I suggest some thing like these:
http://www.amazon.com/Origin8-Threaded-Threadless-Quill-Adapter/dp/B0037N6PEC/
http://www.amazon.com/Avenir-200-Stem-Black-80mm/dp/B002BVW4E6/
http://www.amazon.com/Avenir-Classico-Road-Handlebars-Black/dp/B003FQIR6U/
http://www.amazon.com/Avenir-Flat-Road-Handlebars-Black/dp/B002BW1BJO/
http://www.amazon.com/Avenir-Mountain-Handlebars-Black-600mm/dp/B002BW3H4Q/
The Avenir bars and stems are light, strong and stiff. I just installed a 200 series stem and mountain bike bar on our tandem.
If you want to make further improvement to your bike; consider Tektro dual pivot brakes, I recently installed Tektro R559 brakes on my 1985 World Tourist - they are incredibly powerful brakes, that require much less effort than the original brakes.
Scroll down to the section called "Reach" - but read the whole article
http://www.sheldonbrown.com/calipers.html
you may be able to find them less expensive on Amazon:
http://sheldonbrown.com/harris/brake-calipers.html
On my World Tourist, I flipped the rear brake around and put it ahead of the chain stays, because of the cable braze ons along the top tube put the cable on the right side of the bike. This actually gives more room for fenders and rear rack.