As another self employed person I am curious as a general sense what you are self employed in. And I am also curious as to why a C corp and not an S corp. I am going to go back and read the blog post but I didn't think I saw that in there.
For accounting purposes may I also suggest that you get Quickbooks online, and set up an ID for your accountant to use. For years I have used the desktop based version of QB and I have to ship it to my accountant each month. Now that I have the online version we can collaborate and see each others changes real time. It is a lifesaver.
Keep up the good work and congrats on the "expansion".
Patrick Stop Doing Nothing