All this is to find a finish for three pipes to gift a new piper (as in smokes, wants a pipe, but has none) So three unfinished Lorenzo pipes awaiting a finish.
I wish! I think of myself as a simple pipe finisher. I no longer have the physical ability or machinery required to create much of anything. Deb said it best. "You are more of a pipe butcher."
If you do go for the smooth finish, may I suggest you apply it to the bent pot? The stem line is just such a continuation of the shape, tapering to such a thin end without ridges or interruptions, that it already conveys 'smoothness'.