Is it ok to go for tummy tuck with 27 BMI or I should lose another 10 pounds?

This is an issue you should discuss with your surgeon. Many surgeons would insist you lose the weight and be within a normal BMI range. For me, BMI is not a factor when considering the suitability of a patient for surgery because this method is fraught with problems. BMI disregards your unique body type (a weightlifter with little body fat would be considered overweight or even obese!). If you are at a stable weight and simply can’t lose anymore, then you may be considered for surgery pending an examination.

Thank you for your excellent question.  At a BMI of 27 and assuming you are an otherwise good candidate for surgery you should be fine to undergo your tummy tuck and breast reduction.  Hope this helps.

Your BMI is at an acceptable level. I don't subscribe to the idea of dieting to a weight you won't maintain prior to having surgery as it is usually unrealistic to stay at that weight and it can affect your healing from surgery. Instead, I believe that you should be at a normal weight that you will be able to maintain when having the procedure done. It sounds like you fit this description so go ahead and have your procedure.