May I recommend KDVN airport. Situated quite close to KMLI, the main airport for commercial service within the Quad Cities in the Midwest. Lots of flight training and GA flying, and has a large FBO, where I personally do flight training and could get pictures. KMLI is larger, and though it does need some love, KDVN is much neglected and from my past experience with your wonderful freeware pack, you could model it perfectly.
Thanks again!