Not quite the same, but I'm 6'3" and like my mid bars for a middle-of-the-road setup (bars level with seat), my partner is 5'6" and likes their mid bars for a sit-up-and-beg setup (bars higher than seat). If you wanted a racier setup & your partner wanted a middle-of-the-road setup you could probably go flat bars?
have you figured out what length seatpost you need? at a guess, the standard one is unlikely to be long enough for you (I need the telescopic), and my experience was that they feel a lot nicer to ride when they actually fit...
Not quite the same, but I'm 6'3" and like my mid bars for a middle-of-the-road setup (bars level with seat), my partner is 5'6" and likes their mid bars for a sit-up-and-beg setup (bars higher than seat). If you wanted a racier setup & your partner wanted a middle-of-the-road setup you could probably go flat bars?