I’m 185cm (a sniff under 6’1″)
I had a gen 2 sherpa in 19″ and tried a few cockpit settings before eventually settling on a 60mm stem and with Salsa Sweep bars rather than a straight (a personal thing). Had Fox 34’s up front and tried it in both 100mm & 110mm travel.
In truth I liked it but didn’t love it. For me, I struggled climbing on it. The front was trying to wheelie and so pointing up, I constantly had my chin on the stem. (t’was awsome going down though)
The new gen 3 have been tweeked a little to climb better according to the Stanton pitch.
I wouldn’t want it any smaller and so I’d maybe be looking towards a 21″ XL as you’re a bit taller.