Excellent.
The whole process went pear-shaped at one point because I made the stupid mistake of setting the whole forum up as a test site first and changing the theme folder to the new location. Little did I know that this made changes in the database, so when I moved the files to the new cameldung folder, the database was still stating that the location of the theme files was in the old new location and not the new new location, and when I deleted the test files, it threw a wobbler. And by that point I was too drunk to work out what the problem was. But it all worked out in the end.