Narrowing in on a Class

[username17]

I'd suggest an enchanter for your needs.

Shamans are great but can be slow to level and don't get really good (unless REALLY twinked) until their 30s or so.
In regards to your need to AFK you can always bind somewhere safe. Then if you need to quick afk cast gate and take care of whatever.

It's not as good as FD. But it might be a viable alternative for you since you need to sporadically AFK.