I may take a pass this year, even though I've been there last 3.
It's a nice course, well managed, and my only complaint is the one thing they cannot change - the weather.
i tried acclimation this year and it really didn't help and the heat really limits my potentional in a big way.
So to "solve" that I may change venue and go for IM Newfoundland 70.3 next year, if I determine I can afford it. With so much going on at work, and me just breaking out of my funk, I'm still not ready to commit so I'll wait and see. Or I might do Racine instead, since it seems every year I'm "off-cycle" with a TON of my local buds and honestly, I think it might be really nice to be ON cycle with the for once so I can do more group workouts together. I'm finding the social aspect more appealing every year.
They've increased the size every year for the last 3 by a LOT so I would not think it will sell out TOO quickly.
So I HIGHLY recommend the course, mild bike (1700ft climb) and mild run, and well run. So go for it!
Y - you should do it!!