Those mainstream manufactured boards such as rusty and channel islands are sturdy boards but the smaller manufacturers such as Cole, T.Patt, WRV they all use the same templates for the basic line of shortboards except about 200 to 300 dollars cheaper and just as rippable
Mike is a great shaper and you can talk to him about what you need. hes out of california, but i really think his boards are well made.
Try Brian Wynn from NJ also. It sounds like you have enough info that if you can actually get in touch with a shaper they can really help you with what he needs.
Ordered a 21-13 this year best thing ever, uncle mike is super nice and helps you out i got a sick 5'8 xx-quad but added the extra fix box to ride thruster, oh and added rocket tail super loose fun board, but he will hook you up with anything you want
and i have a lot friends that ride Wynns and no complaints at all
take those dims to a local shaper and save 300 bucks over the rusty or CI. you MIGHT get it by christmas if you act fast, and the bottom could say "merry christmas (dude)" right under the glass. Now thats a thoughtful gift... PM me if you need help finding a shaper in va / obx area.
i agree as well, do this. theres nothing like a locally shaped board