Being born and raised in good old Carmel, Indiana I have played my fair share of public golf in the state. The Trophy club is an absolute must play on your trip. I don't know what route you are taking south down to Indy but if you are taking the 31 south, you might want to stop for a quick round at Rock Hollow in Peru, which is another great Tim Liddy track. And IMO I personally liked Purgatory better than the Fort, but both are great tracks. Prairie View is going to be the best conditioned course, but also the most expensive (good if you can get a twilight rate). Brickyard Crossing is a cool course especially if you are playing around May, you will definitely hear some car racing by. Heartland Crossing is a great course too, I played it a couple of times when it first opened, I don't know if it is covered by houses know or not. It sounds like your trip is pretty good, hope you enjoy it.