Hi SoupHunter!
Congratulations - even if it's been the hard and exhausting way... Two things I found out, (but I think that's not new for the "Pros"): you always have to leave the homestead to activate another stone and you have to continue with any unsolved quest after about 4 stones to be able to open a new portal. Anyway it's not funny if you're done with all quests, it's a bit annoying to have to start over from an earlier savegame to get the chance to continue. I think it's the "price" we pay for being free in a lot of other decisions during the game.
Greez!
Lemon