Having been through the process of setting up SketchUp on multiple computers, I have a process the seems to streamline it.
The first things I do are open SU in the previous version and save the blank template file into a directory I can easily find. Then I make a screenshot of the entire SketchUp screen and save that image in the same directory. Since I use both Mac and Windows, I have a screen shot for each.
Next, I install the SCF Extension Store so I can install the bundle from SCF. I also install my extensions from the EW.
I've already got my custom styles, materials and local component collections in a directory called SketchUp Assets. I don't put them in the User/AppData or Use/Library/Application Support directories.
I open the saved template file in the new version of SketchUp and immediately use File>Save as template...
Next, I import as an image the screenshot I made of the old version to use as a guide for placing toolbars and creating the custom toolbars on the PC side. Then I make the toolbars and place the ones I want displayed.
Finally, in Preferences, I point SketchUp to the appropriate folders in the SketchUp Assets directory. That Assets directory, the screenshot and the template file can all be copied to a memory stick or to a network drive.
