Theoretically yes. however If DannyW is right though and my info is not you may want to go a little longer. I tweak my regulator a lot and dial in the pressure so I cannot be sure what I am actually getting, but a little longer (5ft) will be fine.
As for the style, etc., that is up to you. You can dial this in any way you like depending on 2 factors - Pressure and Temperature. A given pressure (say 12PSI) at a given temperature (say 40f) will yield a given amount of disolved CO2 in your beer (2.47 volumes of CO2 in this example).
Now, change ONE of those 2 variables and you change the amount of carbonation. So if you leave the pressure at 12PSI (because you want a constant pressure and hose length), but change the temp to 50f for a nice English Bitter, you will have 2.01 volumes of CO2, which is better for bitter.
On the other hand, if you crank the temp down to 37f you will have 2.62 volumes of CO2 which will give you almost enough for a fizzier beer (a Wit or Weizen maybe.) If you want to be able to be very flexible later on you would want to be able to change the hose length to match your pressure changes.
The link below has a chart that shows this. I printed this out and taped it to the wall above my keggerator. The chart also has very basic guidelines for how much CO2 for a given style, but there is better info in books and other sites (I think that Northen Brewer page you linked has this.)
http://www.ebrew.com/primarynews/ct_carbonation_chart.htm
Hope this helps,
Rob
