Mate, first let me congratulate you for being strong for sharing such a personal event in your life. Really, it is inspiring.
I take 2.5 mg of Cialis daily, I wake up most of the days with a hard on. Of course I exercise everyday, I eat well, specially food that will stimulate nitric oxyde production, and in the last year, when I was meeting with a sp, I began taking a 10 mg of Viagra. I know it is a small dose, but for me it works. I don't have any secondary effect, which I had in the beginning. Also, I recommend you to get informed of the benefits of pumping. I read that after a prostatectomy, it might be beneficial. It helps with the reeducation of your erection system.