Moving Project files from drive to drive

I'm working with a client using my slow macbook pro, slow USB external drive, and FCPX. Client is 40 miles away. When I get home I backup the USB external to my internal SATA drives on my mac pro tower. So, those files come to over 300GB. Tired of copying all the files from one drive to the next. Video is identical for both home SATA on Mac Pro and USB external for macbook pro. Is there a way I can just copy the project files from the USB, and paste them in the same location on my internal desktaop SATA, launch FCPX, open the event from the SATA and everything, including edits, will appear the same as if I launched the USB external events? Are there more steps here? How can I do this? Is there one data file I can copy over or every project file? Help.

Two options off the top of my head: 1- Inside FCPX copy the Project itself from one Library to the other. 2- Export and XML from one, import it to the other.