I'd get the dark brown if I were you. Would go well w/ your complexion imo. And it looks great w/ light gray or off-white pants and shirts in solid white or blue and blue or red checks/stripes. It even pairs well w/ gray or worn blue jeans.
Then I'd get a dark navy blazer suit. It'd be ideal to have blazersuits in all three, but if you won't wear suits often, as I don't, and only wanted a suit in one of the three, dark navy would be best imho.