for me i will say : go ahead. create a website is not easy as you think. but if you have money it will help to advertise. but remember we have many tools offered by SFI and many GATEWAYS. for me i advise you to use all tools of SFI and i hope the result will be high. ok you must dream high, but go step by step and your result will be good.
again, use all tools of SFI and think to others after.