Julian Campbell wrote:
I'm wondering though if I could build the new site on one I have hosted but haven't worked on for a while. Couldn't I set the whole site up, then back up and load to new host with FTP and then make changes to files such as domain name changes etc. It has been a while but I'm sure I did something along those lines before
Yes, yes you could. As I said above - you shouldn't have to worry about the majority of it. Just try to remember the relative paths for images and links in content. Something like JoomlaPack won't pick that stuff up (and it would be a pain to do manually regardless of the method you use).