Whichever route you go down, there is no excuse these days for having an out of date looking website. Customers start judging you from the moment they land on your website. Internet users expect more from a website than ever before. And, with over half the world now browsing the Internet using a mobile, it is essential that your website is modern looking, responsive and mobile friendly. If it's not, over half your potential customers won't even be able to view your website properly, and it won't get indexed properly by Google either!
Even if you're the best at what you do, you still have to get them to feel confident about doing business with you in the first place.
Your current website will never do more than it is doing for you. You’d see immediate benefits from a restructured website. The only question is how long it takes to pay for itself. How much new business do you need to generate that you wouldn’t have had without a new look website?