I'll be online. I've converted a forum myself once as well and have got a bit of knowledge of php, should you need help.
I think it's important that people visiting this forum after the move will notice immediately that it's an old one. Perhaps you can move all subforums here into the archive, except for one. Or close all except one. That is, if that is not too much trouble.
Good luck, and it can't be said enough: thanks for all the effort!