Plan for the long haul.
You will wear your suit widely and well. So it helps if you make it easy on yourself by not making it overly daring. If you want a flash of color, then you can get a bold silk lining. It's a nice detail that you literally keep close to the vest. Nobody knows but you.
If you want a bit of hidden complexity, add a ticket pocket – the smaller, higher pocket that's usually on the right side of a coat – which can carry a pocket watch, your pass to the opera, or a $1,000 chip from a casino. A tailor can also make specific interior pockets to fit anything you feel compelled to carry with you, from large fountain pens to small flasks to Android tablets.