http://www.supermod.org/ have a continuation (maybe a forked?) version of YaBB SE with many of the mods. More mods will continue to be added afterwords, and you can turn on/off whichever mods you want to. Its a simple process to update as well.
If you don't want to go that route, I'm sure the SMF people will offer mods as well, or at least most of the same features.
My advice would be to wait. Test SMF on a different site so you can see the admin features, but wait before making a decision until either the features you want are available or until you know they won't be.