Yes, travelling overland will be tough .. it's three days assuming we ride at full gallop (I'll have to conjure us some horses), some of us fly, and Bear here can run like the wind.
I tell you, though, nothing would beat getting there instantaneously through that portal! I say we go for that... but there's going to be an ambush waiting for us.
Let's talk strategy... but in the meantime, how about Bear and Artemus go hunt us up some dinner? I'm famished, and tired of rations. Oh, and could you gather up a couple up some juicy mice for Wisp? He's been so helpful lately, he deserves something special.
So I'll throw out the first strategy idea: Artemus and Quidam try to scry upon that room and above before we go in there. And please count Mrs. Griffon out of your plans ... she won't leave her nest... unless perhaps Bear agrees to sit on her eggs!