Its impossible to say just off your height i think. Thomas hearns was 6'1 and fought at welter, taller than mike tyson but that doesnt mean tyson should have boiled to welter! Whatever you can get to whilst still remaining strong at the weight, only you and your trainer can know that.
I agree. For example De La hoya fought in super featherweight and lighweight and he is 5'11. If you are on average 6-7 cm taller than the average height in your weight division people will accuse you of being a height bully.