Terry,
If a "raft" is two, then you are correct regarding Indian Hills par fours, because that is the exact number that are over 400 yards long. Most of the par fours are of the 330-385 yard variety, and generally not too tough. While Indian Hill is certainly beautifully maintained, and is a lovely walk in the park, great golf it is not.
Sunset Ridge, in my opinion, has some of the finest greens in Chicago. And you are right about the haircut. I've played there many times over the years, and last year remarked to my host how I had forgotten how tight it can be off the tee. He told me I should just hit it straighter.
Agree on Edgewood Valley. Played there for the first time last summer. My first putt on the practice green to a pin in the middle of the greeen rolled 40 feet past and off. "Oh, that's the way it's gonna be, huh?", I said to myself. The layout is nice, but the greens are over the top tough for a first timer.
Not sure which list Conway Farms is on for you, maybe neither, but since I have played it lots, I put it in my top Chicago private courses. It can play awful tough from the tips, and the conditioning the last few years has been the firmest of any course in the area.
Cheers.