I find it is best to wait till Friday night to make up your mind on what route and group to go with, if it is your first time.
After driving into the area, you will know enough about the roads to know just how you want to enjoy the area - and after talking with others (or going along in the right seat with someone on a friday-evening-romp-thru-the-dragon), you will know.

Pacemaker's group is the "tourist class", good name for it, as a first timer will enjoy looking over the pretty area, but note there is no "SLOW" class - even Pacemaker's group doesn't hold any traffic up.