AAA markets typically need to be MSAs ranked in the #35-70 range. Think Indianapolis, San Jose, Nashville, Oklahoma City, Memphis, Richmond, New Orleans, Salt Lake City. Madison is #86 and might be possible, but the Brewers may not want to risk cannibalization in people staying in Madison to watch the AAA team instead of driving to Milwaukee to watch the Brewers. Grand Rapids is #52 (over 1M in the MSA) and has an A-ball team. That's the market I'd target.