In the end I decided to do my biceps only . Too complicated doing delts this cycle, so they'll have to wait more.
The pain in my bis was unbearable the first few days, and I was one step from quiting everything. Luckily, over the next days the situation got better. Now I am three days away from the 3ml phase and I have no problems whatsoever, the pain is no more than any normal injection. I had no bruises at all since the start, also the inflamation is minimal so I'm lucky so far.