The only way i would do this is if i can do this now. Being reborn with 2 penises will only end up with genital mutilation as my parents will probably cut one off to save me the pain of not being able to mentally handle it in my youth years.
Personally, i dont think i would be able to handle it as a child with an immature mind. I would think i was some kind of freak. Other kids would make fun of me and i would probably be depressed and anti-social. I would probably never date in fear of scaring girls away or the chance of being outed and made fun of.
To answer the OP, no i don't want to be reborn with 2 dicks but ill take another fully functional one of the same size right now any day. Preferably stacked vertically i stead of horizontally so i can do DP and DPP.