As it so happens, I have the 13' 6/7/8 Highlander

That BC Scandi that you have is in the same ball park as the one I have for my rod. It works very well with long mono leaders starting with #30 Maxima down to #12, #10 and #8 tippets. I've also been pairing it with 15' Snowbee poly's in all densities and find excellent turnover for flies up to a reduced #1/0 (about the size of a #2 fly), same for the mono leaders. I prefer a straight mono leader for anything on the surface, whether skating, waking or hitching.
Steve built my BC-Scandi as a multi-tip, so for any serious payloads, I can remove the floating tip and add a sink-tip. I use #9 Rio 15' replacement tips or 12' of Z-11 to deliver shanks and larger traditional size flies.
Mike