what would work best?

Would you make a mini-malibu board 7’0 ft designed for 0-5 ft sloppy and mushy waves, carrying a 152 Pound experienced surfer, looking for SPEED, and some manoeuvrability: A] Full concave, diamond tail, boxy rails, 2 3/4" thick, 18" Nosewidth, 14 1/4" Tailwidth [both 1 foot off N/T] 4" noserocker, 2" tailrocker OR B] Full to double concave [up from fins], round tail, semi boxy rails, 2 1/4" thick, 13 1/2" 1 ft off tail, 16" 1 ft off nose, 5" nose rocker, 3" tail rocker. What are your exact 1.concave/2.rocker advices/experiences in particular ??? Greetz from The Netherlands [Europe] Wouter