OK. So I just upgraded you to intermediate.
Based on your additional information, and the desire to go FF, I would just keep saving up and keep what you have until you can get a 5DIII at a reasonable price. The original 5D is/was a great camera, but it was introduced in August 2005, so the tech is now several generations, and years, old and really you are not going to get much in the way of a step up from the 60D (introduced in Aug 2010), other than have FF. I would stick to the 60D, save up and try and get a more current model FF camera.