Faine

Yep you can start in TOB.  Summon him via the Fate Spirit and choose Edwin your lover not just Edwin the Red Wizard or mage or whatever.  Your lover.
Have fun!

Aha! Thanks for the reply. That's nice and easy, now I feel silly for asking.

You're welcome. I never tried resting outdoors after the Lich battle. I finish it and head right back to the FF and rest. There is a wonderful dialog with Eddie and then Momma shows up right in the middle of...something. Good luck!

Oh my word, something tells me this is going to be very amusing.

Holy crap you've finished the romance! There is no more content. Of course you'll now get the Slayer talk and the Lust Chamber flirts and event talks but you're essentially done. The quest I meant was the one where Eddie gets a letter from you know who.
I think I read somewhere that somebody had Eddie's mother show up in the Underdark so I guess you can go to Spellhold now but why not rest first? So I guess you haven't met his mother yet?

Heh, I thought I had to be getting near the end of it. Nope, I've not met his mother yet, but I think I'll rest a few times and leave the game on pause for that before I try heading after Imoen, just to be on the safe side.

Thanks for all of your help.

You can go any time as long as Edwin's personal quest is not left hanging. If you go after you are lovers you will get a nice Slayer talk (don't forget to PID talk him) and you will get the Drow lust chamber flirts which are very nice! I like to wait for lovers stage because of this.

Ah, thank you. So if I've just done the Lich battle, it is alright to leave after that? Or do I need to wait until whatever business there is with Edwin's mother is over?

Ah, I think I'm okay after all then.    

I'm not sure why they didn't install properly the first time, but it looks like everything is in working order now.