Good fit is very important, and once you get it right, it is so nice! As far as bar height, I like mine higher than most, so I have a stem riser AND adjustable stem on my touring bike. It works great for me, and I have had NO problems with handling, although being a tow bike (I use a two-wheel low-center-of-gravity trailer), it is not a quick handler by any means. I have done some 40-50 milers with it, and one 78 miler over a hilly ride to Livermore from my house in central valley. Felt good, but tiring hauling 50lbs up the hills. Lots easier on the downhills!
In an attempt to raise the front a little more, and get better braking, I went with a 29er disc fork, Avid BB7 road disc, and 203mm rotor.