Good guesses all.
Do it all bike complete*. Done 1 ride on it so far- and it was pretty amazing. Looking forward to lighter mornings/ afternoons so I can mix in some Epping forest to the commute.
*awaiting some 650b wheels from superstar, and some Hunt 700c tubeless so these can go back to the gumwall 28c for fast(ish) road riding. Plan was to try and enter something stupid like TCR, but the dates for that don't work with work, so we'll see what I get up to.