Here's an elegant approach to your logo project. Since the cufflink is a decorative element and suggests soffisticated taste, I though that an elegant and subtle logo might also work. I used the letters c, f and a, trying to incorporate them in a cufflink silhouette. If you like the concept I could develop it further.
Here's another idea for your consideration. A thump-up with a cufflink to inspire trust. If you like the concpt, I could polish the thumb image and try other color schemes.