I had no idea someone bought MAM and started doing improvements. Between the flooding and continually losing money the track and facilities really took a beating. It’s good to see they are making improvements.
That said, there is almost no karting presence in western Iowa/eastern Nebraska (besides dirt). While you might be able to run a kart at MAM/RPM they don’t have club racing or host a series. Your best bet is to look at KART MARRS road racing series (kart.org) or head out to Motorsport Park Hastings (racemph.com). MPH actually has club racing but I have no idea what is popular or which classes they run.