I’m not interested in BCBR per se, but, looking at the route maps I’ve ridden all of those areas except Apex.
Completely different to the “traditional” North Shore/Sunshine Coast/Vancouver Island trails used in past BCBR.
The Okanagan is much drier (and hotter) so you won’t be dealing with slick roots, generally the trails are MUCH less technical and more open/flowy/fun/fast thru wider spaced trees.
Beowulf in Silverstar is a BEAST of a climb, though their marketing people get somewhat carried away with the signage and warnings. IIRC correctly, there’s ominous warning signs about 1800m of climbing whereas my Garmin clocked around 900m!
(Edit: even worse at overstating the climb! https://strava.app.link/zMsGH5RI4nb)