14 days don't much matter. One thing I learned from Sean is deals with books are very negoitable. Call them have what you want good to go ( reasonable) propose the deal. It won't work at a giant shop, it will work at a smaller shop. Run it by a guy like Jake at Sportbet, it stands a chance.
You want a 65 % bonus, with a 14X roll, and a 30 day hold with winnings not withdrawable . Propose it to him, he might accept. I like that about smaller joints, the wheel and deal factor !
Cut a deal, offer one !