That's just my personal preference because I think it looks nicer than when they are crossed over, you can run them any way you would like.
I did have a quick look for a different shock bolt and this is exactly the same size but out of stock everywhere I have looked.
https://www.plushhillcycles.co.uk/components/bike-frame-spare-parts/transition-bikes-shock-bolt-8mm-x-40mm__9245The bb hight on mine is 343mm from the ground. This website is great for working out the geo
https://madscientistmtb.com/bike-geometry-calculator/Took the bike for its first ride at the weekend mainly to get the shock setup. First thing I noticed was the cable rattle in the downtube is loud! Will need to get some foam pipe for over the cables to sort that out. The headset that came with the frame started to creak near the end of the ride nothing obvious when I striped it down, put back together and it's gone.
As for the Topaz setup with in fully open I started at 200 PSI, sag is sitting about 25%, rebound 6 from closed, bladder pressure 185 PSI, positive chamber spacers 3 and negative spacers 0.
It felt okay on slower tech trails with drops but on higher speed and small chatter it felt a bit harsh. Was only using about 70% travel as well so removed 1 spacer from the positive chamber and changed the rebound to 5 from closed it was instantly better! Will maybe play around with the bladder PSI and rebound a bit more this weekend.
Mostly just pushed up the trail for the suspension setup but the small bit of climbing I did the pedal bob was pretty minimal even when in fully open on the shock.