You said that you decided to form this corporation as a not-for-profit [assuming this was a 501(c)(3)] because: "a project of this sort could only generate so much revenue," and "since it was my first major project, it only made sense to start somewhere small and make the organization non-profit."
The revenue generating capability of an organization is not something you consider when you decide to go not-for-profit. There are non-profit organizations that receive hundreds of millions of dollars a year in income. Non-profit organizations can make a little or a lot, it doesn't really matter.
The size of a corporation also has little or nothing to do with whether or not you should structure your company as a not-for-profit. Examples of some large non-profits are:
Org (2010 revenue) Mayo Clinic ($7.9 billion) United Way ($3.84 billion) American Cancer Society ($926 million) National Red Cross ($3.21 billion)
Not-for-profit organizations have many strict limitations on their method of operation. Everything from funding to salaries are limited in some fashion. You typically opt to form a not-for-profit corporation when you are forming a charity that you want to protect from becoming a profit motivated enterprise once you've moved on.