I did the PFI class back when Martin first started teaching with them and before they had separate levels. I also looked into running a course like that in Wisconsin. While everyone involved is a great diver/instructor/person I found a huge difference int he number of students needed to run a course.
FIT required just 4 students for an advanced Monofin course, and more like 6-8 for the standard level II class. PFI required 16 students to be paid in full. I also looked into having Aharon Solomons come up and teach a monofin course while he was in the States. He needed 4 students for a class like that. In the end I couldn't even get the 4 students together when I tried to run it.
See how many people you have interested and then go from there. I ended up driving to Florida to take the course because there was little, to no, local interest.
Either way you will need a pool and a body of water- either swim-able or boat-able, to reach the depths you're going to be hitting- at least 100'.
Good luck no matter which way you go- because they're all great.
Jon