I'm not sure this is helpful, but I'll offer my limited experience with larger women in classes I teach.
And the answer is: It depends.
I currently have a student who reported height and weight to me so the shop could estimate sizing for a wetsuit and BCD during open water dives. And I was shocked. I never would have guessed she weighed as much as she stated, but there it was. She had no trouble in the water and will be an excellent diver. Her BMI was lower than yours, but I never would have guessed she'd be overweight based on BMI. Not thin, but not obviously overweight.
In the past I've had students who had a lot of issues. One student could barely maneuver her arms around once she had a wetsuit on. But she was big enough she could barely maneuver her arms WITHOUT a wetsuit on. If the regulator came out of her mouth, the odds of recovering it were quite low. Others were winded by the time they got their equipment on. I don't think these apply to you, though I could be wrong.
A couple questions to consider:
With one hand on a wall or piece of stable furniture, can you move the foot on that side so it rests on your other knee? That is, with your left hand on a wall or sofa could you put your left foot on your right knee? And the reverse, right hand on wall and right foot on left knee? If not, you'll have some trouble getting your fins on. There are alternate techniques, but this is a bit of a warning flag that you'd need accommodations not usually required because your mobility is limited.
Can you walk up a flight of stairs carrying something heavy and not be winded at the top? This is less of an issue once you're in the water, but it can be tougher if you're doing beach-based dives. I've had some students wanting to learn dry suit use who had a lot of experience in tropical diving from a boat and had no idea they physically just couldn't handle carrying all the gear up (or even down) the beach.
I'm not a medical doc: Take this with a grain of salt. Perhaps file it as "will I enjoy SCUBA training" rather than "am I in good health for SCUBA training."