I battle this also. Had a quintuple in 07 at age 49. BP is puzzling at times. I eat very heart healthy, low
sodium, and take Metoprolol. It does not go as high as yours, but sometimes hits 150/93, or around 135/88 - which is always alarming to me.
Two things I have noticed that keep it in a good range (120/80) are regular exercise and low
alcohol intake. I have a tendency at time to watch a Friday evening movie with a few glasses of wine - the next day my BP is always up.