Hi Jairus,
Excellent work on the Performers!
Of course, a balsa version with redwood stringers (mahogany was also actually used to a lesser degree than redwood so that's spot-on as well!) such as you're doing would be the "creme de la creme" and would have cost an arm and a leg...but they could be ordered and still probably can be. Nowadays, many balsa boards are actually hollowed-out for lightness...only increasing the time and cost involved producing them (not to mention the material costs!). The fact that you're planning on actually fiberglassing them is off the charts!...no zipped rails eh

(inside surfboard humor). Seriously, just the boards alone might be desireable to collectors of surfing memorabilia. On a really anal-retentive level, the plan shape looks good...very much like a board from the period. If I might just suggest (and again, this is really nitpicking)...the tail is a little wide at the square end and the nose is a bit pinched or "pointy", more like the designs that Harbour was producing to my eye. The Weber Performer had a slightly narrower tail from the hips back that enabled it to track better and turn faster and a more blunted nose for getting up there and noseriding. Small points that really don't matter in the long run in the least

Here's a photo of a current Performer that was cut using the original shape template:

...and a shot of the famous "hatchet fin" design that really became an iconic symbol of the period in itself along with the Dewey Weber logo and the red clothing line he designed for the Team members. Dewey had loads of foresight as a businessman and that took his brand into all kinds of territory...but I digress (sorry).

...and just for more memories of "The Little Man on Wheels" :

...and Dewey "getting ten"
Again, beautiful work! Looking at these...I think you'd have made a heckuva surfboard shaper and they always get all the glory (the glassers, sanders and "glossers" never got much respect).
-john
PS...I hope my post didn't take the thread in a different direction, I figured the boards and surfing are part of all this project. If it's too OT the admins can and should delete it!