I'd say it depends on the size of the database and how fast your upload speed is
huge database + slow upload = Long time to get it uploaded.
I would do it on the server itself.
@AdamD@Brogan how do you restore just a database backup? Cpanel/phpMyAdmin won't let me do it because the file is to big. Can I do it with MySQL restore a MySQL Database?
Not sure, how large was your database?
They may have file upload limits.
Do you have shell/SSH access do you know? IS it a shared host, or dedicated server?
Alright everyone thank you very much for all your assistance, I have manged to learn how install / convert / my own site. This place is awesome thanks again...
Question should I do this on all converts or wait till doing it on Xenforo?
After conversion, especially check the permissions assigned, rebuild your search index which is not converted and also make sure files got copied correctly, for example avatars and smilies.
Search index was not converted
Your old search index was not converted. Searching will always yield an empty result. To create a new search index go to the Administration Control Panel, select Maintenance and then choose Search index from the submenu.