Congrats, youngster.
I started HRT at age 61 and have had no problems. I have liver enzymes checked once a year and reduced my dosage after SRS. I just try to keep the hot flashes away, now, at age 70+.
Follow you're doctor's advice and don't try to take too high a dose. Boosting the intake way high doesn't make breast tissue grow more or faster, but it can lead to other medical problems.
Relax and enjoy.
Robyn