I don't want to sound negative, but your focus on the Selig series of airfoils is the wrong approach.  If your purpose is to justify the use of this airfoil at all costs, then you can probably concoct something, but the analysis will disregard the performance of the final product: a wind turbine.

Start with the basics:
You want to produce "X" kW in a wind "Y" mph.
Power production must start at "Z" mph wind.
I want said wind turbine to survive winds up to "A" mph.
The turbine must cost "B" dollars per unit.
The turbine will provide power to a) local grid, b) national grid, c)local battery, d) some other local consumption, eg, heated water.
...et cetera...

There are a dozen more questions that an ENGINEER should be asking BEFORE picking some detail bit like airfoil shape.  You don't even know how much torque must be overcome in the theoretical generator to start it as the wind speed increases.

Note that the questions I asked above didn't even cover the basic specifications like diameter, voltage, current, frequency, mass, material selection - these cannot be selected until you have studied the most basic economic questions.