Assaf Ben-David is right with what you need to do, but before going there you should know what you expect from an investor. Are you just wanting the money? Do you hope that they'll have the expertise to grow your business? What are you going to do with the money?

I also agree with Assaf Ben-David that it sounds like your doing well. Also, before getting ready for faster growth, make sure you are scaleable. I check this with every company I have worked with because if you don't put the pieces in place to be scaleable, it could cost you more than you gain.

So before trying to find an investor, figure out why you want investors, what you expect to get from them and are you scaleable. Plus, make sure you have a sales process. Putting in a sales process alone, will accelerate your sales tremendously. When I did this for a client, they grew and additional 33%.