well Vado is out....availability is gone in the 4 step thru so I’ve pulled the trigger on the local guys building the OHM. But extra battery perhaps later.....hopefully when I’ve become a little more seasoned....or weathered@MayL, I've just added a note on tyres. An important point!
P.S. Later, you might add a 604 Wh battery to Vado for some CAD1100.
Many thanks to you and the other great people on this forum for the excellent advice and technical info and support!