My suggestion is to use the BMI as an indicator of your proportion and set your goals based on what is suggested is a normal ratio for your height.
Remember that this is really only a guide and that if, for example you have a very slight frame, a BMI in the low range of normal may be your comfort area whereas someone with big bones may have a hard time achieving the normal range.
Set your goals in consultation with your doctor and consider any other factors that may require modifications to the BMI.
