I can tell u it will definitely be painful with traditional braces, there is no way around it.
Some people have tried using wax, so they place it around the brackets, so you just take one block by one block and leave it on where it will last for a couple of hours, and they say that it helps them.
In maybe two weeks’ time, your skin ulcer will heal and harden like a bruise and then you don’t feel it as much anymore. Ultimately, it does depend a bit on the tolerance of the individual.