I have alterations done at H madison or at my professional third party tailor. Alterations at H can take a long time, and I just got a call from Hermes for my tuxedo jacket: “Um, can you come back in bc the pin fell out of the sleeve and there were two different lengths discussed, so we want to make sure we got the right one.”

So, I would personally always recommend tailoring close to your location bc there could be a need for a second fitting; you might decide you want to wear the garment with different shoes etc; or, a pin could fall out.
I also recommend picking up alterations, bc there have been cases at H where the tailor forgot to do one of the tasks and where SPA forgot to SPA one of two box Kelly bags brought in at the same time that they had in their possession for months. (This kind of snafu has not happened to me at Chanel).
I believe
@Bdbunny does have alterations done long distance (FSH) and has things sent back to her via her local, and she seems to have much better luck than me
Re the silk shirt in particular, I got a 34 which was the smallest at the store. It’s huge. I think if the sleeves were wider, my DH could fit into it. My SA and the SM insisted that it’s meant to be this way. I think I’m bigger than you (I’m a 36 Chanel), but I vacillate as to whether I like being swamped with fabric. Same with the silk pants. They really are like pajamas.
@Angiebbb , I like the soft teal green equestrian jacket, but I’d only wear that color with white jeans or beige in the spring. So for me, unlike gold, ebene, etoupe, beige, or light neutrals, it would be limited in usage. I think it’s too close in tonal value to wear with my lighter blue jeans. Though I think it could be very pretty with this seasons cuffed Gris carbone denim

If you love the color, I vote yes, why not.
ETA: I was just there and I don’t recall seeing mosaic in red, but I wasn’t looking for it either. I think there was a hot pink section though, not sure (second to last pic). Behind the white suede corset dress, ghillie perforated detail, mannequin.
View attachment 6196720