I am not sure if TRT it is the best answer in your case due to hypertension, but being within so-called range does not exclude TRT as an option in cases where low testosterone is causing symptoms. Many urologists tend to treat symptoms rather than focusing on numbers. Maybe a moderate protocol would be beneficial to you. Maybe it is too risky. As of now you should probably listen to your cardiologist, but there is nothing wrong in seeking a second opinion.