Account Creation Doubt

[Frylock]

Hello there,
I wont waste time, will get on the topic straight away, Look I have 3 accounts of my own those are: Ojasvisharma26, Frylock and Tandooriii, and in additon I have my friend's account which he gave me by his own will via discord: Ayan123456. I wanted to ask What if I make 1 more account of "mine" so in total I'll get 4 accounts of my own ownership + 1 of my friend's account (changed password but not email). So can I do Bosses on all 5 accounts I use and won't get banned or will I get banned for this, Also if I dont make 1 more account and use mine 3 accounts + 1 of my friend's account and do bosses on all these 4 accounts will I get banned or not?

Let me know as soon as possible
Thanks in advanced!
Regards, 
Ojasvisharma26 | Frylock | Tandooriii