I guess it depends how you'd rate them.....for me it' time to go through.

Hawkeye 3hrs tops.( it's the size of a football field....)

DesMoines.... a full day if you don't stop much, but I've heard they added more this yr??  so it may be easily becoming a 2day'r? (3-4 buildings)

Louisville= 2full days last time I went... first day scout/2nd hit the must see's....but they've added on alo since I went...

Peoria....haven't been too it