Bike fit questions … 6’1″ (186cm) but short legs!

Hi all, I'm about to order a Sonder Camino Ti but I'm right on the boundary between the Medium and Large so thought I'd sanity check my thinking before I commit. I'm 186 cm tall with an 81 cm inseam. My current bike is a Giant AnyTour in size L (reach 401, stack 643, standover 818) and one thing I don't love about it is that the standover already feels a bit high – I don't really like that feeling of not having much clearance when stopping or shuffling the bike around.

Looking at the Camino geometry, the Medium is stack 583 / reach 395 / standover 773 and the Large is stack 601 / reach 420 / standover 812. The reach on the Large looks quite long to me, and the Medium would give quite a lot more standover clearance, which is appealing given how the Giant feels. Because of that I'm currently leaning towards the Medium. If the front end ends up feeling a bit low I'm planning to run a Redshift ShockStop stem (either the +6° or the +30° version) so there should be a fair bit of adjustment available there.

My riding is mostly gravel touring / long relaxed rides rather than racing, so comfort is definitely more important than aggressive fit. Just wondering if leaning Medium sounds sensible here or if I'm overlooking something obvious.