1) Im about 2 and half weeks post surgery, I had the end to end urethroplasty done by a specialist in philly. I have had some complications after surgery such as high fevers, loss of sensation in some of penis, a lot of swelling and I have yet to get an erection. With all of that said, I would still have gotten the surgery since it really is the only long term solution. I torn my urethra completely after being hit by a car so I had no choice really. I can say that everyday is better than yesterday. I am still sore and there is some swelling but it is slowly going away. As far as the erections go, I still have the catheter in and get it out next week so I feel its mostly mental thing. im 23 so obviously this is a concern for me but staying positive is key to your recovery.
2) I would ask what type of urethroplasty you will need. You will most likely have the end to end one done over the buccal mucosa where a skin graft is needed since your stricture is less than 2cm. I would also ask how often your dr performs urethroplasties on a yearly basis. My original urologist only does 10 per year. The dr. that I had perform mine does 70 per year. You want a urologist who is specialized in urethral reconstruction.
3) Some guys say to get tight boxer briefs but I thought that made my incision site a little more sore than normal. I guess everyone is different so Id say definitely buy some if you do not already have them. You will also need some sterile cleaning supplies like gauze and saline to clean the catheter end to prevent infection. Your dr will tell you everything you need prior to the surgery though.
Not sure if any of this helps. Im no expert but just what giving you some insight on what Im going through right now. Good Luck!