Thanks for the friendly advice mate. I did include what assiatance lifts I will be doing but did not really go into much detail, sorry about that.
I will be doing pullups, hanging leg raises and chinups to prevent imbalances, again not to failure and only around 20-25 per session.
So for example on monday after 3x3 for deadlift i would do either 20 pullups, HLR or chinups. I am hesitant to do bodybuilding style assistance like 5/3/1 routines do because I don't want to exhaust myself.
Also your good advice should of come a year ago! My left shoulder is jacked because of all press no pull. Thanks man