Hey folks, I'm looking to tailor a charcoal colored jacket for use in both a business setting and for dressy-casual occasions. Perhaps something along the lines of this: Hoping you can help me out here. I'm looking at something relatively slim so is there anything I should mention to my tailor on top of the following? - Double vents - Two button - Narrow lapels (How narrow can I go without it being too informal?) - High armholes (How high do I go? I read somewhere on SF that its the height between my thumb and little finger extended?) - What do you recommend I specify with regards to pockets? Also, I live in Singapore which is perenially scorching. So ideally I'm looking for something quite lightweight. I've read about Thomas Mason cotton and David & John Anderson but the former seems quite pricey and I don't know any tailors here who carry the latter. Any help is much appreciated. Thanks!