Harmon Rocket II questions

Does anyone here know much about the Harmon Rocket II?
I've been looking at it, and it concerns me in the fact that the
cockpit demensions look a little snug. It has enough room in width,
but the distance between the front and back seat seems too close, as
does the distance of the instrument panel from the front seat pilot.
Also, in looking at pictures of it, pilots seem to have their heads
right up against the top of the canopy. Is John Harmon a short guy?
I suspect it was designed by someone not so tall. I guess it would be
nice to go sit in one somewhere, but that's not always easy to find.
And I wonder if the wing is strong enough. His webiste says he did
nothing to the RV-4 wingspar to strengthen it. He only shortened it to
to reduce the bending moment on it, and reduced the rib spacing. Then
it says he sand bagged the wing to 6 G's. 6 G's isn't all that much
for an ultimate load test. So I'm a bit leery of the design. I wanted
to build one, but after doing a little research, I'm turned off by
what I've found out.