Will this snowboard work for me?!?

well im thinking on buying the roxy silhouette underwater snowboard. I am no where near a snowboard shop at all so i have to get mine online. I am 155 lbs (by the time i will be going snowboarding i am hopeing i loose 20-30lbs) but if i dont achieve that i still want my snowboard to be the right size. I am also 5 foot 4 inches, and have a size 10 foot. I am wondering if the snowboard i want will be wide enough for my feet. Also what size of snowboard would i need? (roxy snowboard measurements differ from other ones) If this snowboard just wont work for me. Please recommend a roxy snowboard that will. I also ride freestyle and slopes. i am and intermediate snowboarder too. PLEASE HELP ME!!