For your height, weight and above all your feet size (Euro 44), we recommend the Dual 175. Indeed, with soft boots you would have boot overhang on the Dual 168. The Swoard boards are not that stiff longitudinally, and you don't really feel the length (but the torsional stiffness is good and well distributed).
However if you are using hard boots, the Dual 168 would be a better choice, because it will be wide enough for your (compact) hard boots.
Though we are a Swiss company, we ship from France. The invoice is VAT free + shipping 59 € to USA. But you will have to pay local taxes to the shipping company (UPS) when receiving the parcel. Is it 20% in your area?
We send you an e-mail for other details.