Hi,
I would like to say well done on your weight loss, you really have done well.
IMHO diabetes has come first in your life to the detriment of the rest. Do you class yourself as a man with a lovely family, a good life who happens to have diabetes or a diabetic with a lovely family and a good life? You have to get the balance right for everyone who loves you and cares for you and yourself.
If diabetes is threatening everyone's emotional happiness then you have to make changes that suit everyone.
The blood pressure issue amazes me as your Dr. has a duty of care and you have obviously tried so hard to get it down. There are members here on the cusp of an acceptable level for diabetics, 120/80, and they are given medication. You have to make a stand over this.
The BMI is outdated and does not give a clear picture of the fat ratio of your body mass or how much is muscle.
http://www.medicinenet.com/script/main/ ... key=139331
As long as you feel happy at your weight that is all that really matters. The irony is that normal weight Type 2's are classed as metabolically obese because they have excessive fat around their organs. Unless we are all tested, nobody knows how much fat they are carrying. As with diabetes, weight is another thing where one size does not fit all
I have no experience of Metformin so cannot advise on that point. I do know that it has heart benefits and is becoming more and more recognised as a possible medication for other conditions..
I hope this has helped and you find peace in whatever way you choose to go forward as you do not needed that added risk of stress.
Please keep in touch as it helps to speak to others with diabetes when the going gets tough.