You really don't need to see a cardiologist for simple HTN.
Your family practice physician is well-versed in treating high blood pressure.
As stated above, if you are near the FAA limits (155/95) then your BP is way too high.
Get on medication if that is what your doctor recommends.
You can lose weight, exercise more, eat better, and try breathing relaxation techniques.
You do not want to put yourself at higher risk of stroke by having untreated HTN.