Dude, don't start, haha. Look up a post that says something about "I pissed in my plants did I kill it?" thread. You will get your answers there and avoid what is going to come to this thread.
Just use regular nutrients or your pot may taste more pissy then potty, haha. But if you have to, use 1 to 10 and you probably won't kill your plants.
Use of charcoal, wood ashes, and compost you would be better off then with piss. Nitrogen is in the plant material along with other nutrients.
Best option is to buy a commercial fert for your plants by far. There are organic ones out there if you are trying to be organic.
Good luck,
Flabs