I wanted to bump this to get some advice. I have this jacket but it's a bit too long. It's 32" from the BOC. 31" would look much better on me (5'11). The button stance, as you can see, is plenty high enough to absorb the shortening. The pocket flaps could be another story. 1 inch might work, but if it looks out of balance after the job is done, hiding the flaps would give the illusion that they pockets are higher.
Would you opt to open the pockets and tuck the flaps in, or have it fully converted to jetted pockets? FYI, I only have $40 invested into this jacket (Isaia), and it's not like I can go out and grab this color of velvet at that price in my size ever again, so I am fully committed to making this work.