Great replies, both on and off list, thank you!

I suspected that CG was a bigger issue than raw weight, as the plane is certainly not wanting for power.

I will become intimately familiar with the various profiles that result in a forward or aft CG.  The CAFE report has some illuminating information on the handling for both configurations.  I already realized a considerable difference in handling between my recent solo flight compared to the flights with the CFI beside me, particularly during landing.

I'll also do myself a favor and pull 'my' POH from the plane and spend some time with it here at home to learn more about it.  My experience to date has been with certified airplanes....this is a whole new ballgame.  I thought that the max gross was recommended by the factory, but didn't consider the fact that builders actually publish a number for their airplane that is binding for operations.  That's great information, particularly for insurance considerations. 

Thanks again for the advice, I intend to heed it. This is a high quality list.

Keith