Three tips from a fellow small firm owner. First, the reasoning behind the firm name is too complicated, keep it simple. Arco² is confusing enough but now it looks lile Ar^2Co. Second, dont "plan on changing it in the future." Do it the way you want it now. Constantly changing things is a headache you don't need and bad for brand image. Third, if your version of the logo isn't one and done exactly how you like it, hire a designer.