Hi first post here so be gentle

so i am in the process of getting a custom Mctavish Noosa 66 board made, yes as the title states it is going to be 12ft yes 12.
i currently own a 9'1 - 9'6 - 10'4 and 11ft board so i am no stranger to big boards.
i want to make the glassing heavy real heavy but i have never felt a board anywhere near the specs im looking at
the heaviest glassing option available to me is
6oz + 2x 8 oz with a 8 or 6oz deck patch on the deck, 8oz and 6oz underneath
the board also will have a 1inch redwood cedar stringer.
now i am a big guy im 6'6 and 115kgs im not afraid of the board being heavy but im starting to wonder if this board will be stupidly heavy even for a strong guy like myself.
so i suppose my question is has anyone ever felt/owned a board with this type of glassing, any opinions appreciated thanks