The Great Planes Super Sportster EP and Mini Super Sportster EP could be good choices. You might also find the Slinger or Mini Slinger flying wing ARFs to be a good second plane.

The Formosa and Formosa II are nice airframes, but they're pretty quick and very aerobatic. They're more of a third plane than a first low-wing.

That Goldber Tiger 400 should still be on your list. You might also take a look at the E-Flight Mini Pulse XT and Mini Ultra Stik models. These are available either as ARFs or as PnP models that are mostly complete, just add receiver and transmitter.