Alright, lemme clarify:
-Not interested in converting an IGH equipped bike into a conventional derailleur system. I've already got one with a 21 speed derailleur drivetrain.
-I realize that I should have used the term "gears" and not "speed".
I would prefer SS, but have my doubts as to the terrain, wind, and my own physical fitness level. 3spd IGH might work, but I am not sure. I was wanting to know how difficult to switch to a IGH with more gears. That stock IGH-3 might not be low enough for some of the hills around here, or it might be geared so low that I will find the top end lacking.
So, other than building a new wheel around another IGH and installing another shift controller on the handlebars, it's not too complicated?