5 exercises and 5 sets on all sounds a lot. but then again, maybe that's perfectly allright for you with your genetics, experience etc what do i know, you gotta figure that out yourself if you're making progress, if you got enough energy to the exercises and sets at the end of your back day... if not might wanna drop one of the exercises.
i would change pulldowns for chins since theyre harder. maybe also switch from one week to another so let's say week first you start, efter deadlifts with rows... week two you start with chins after deadlifts... otherwise whenever you're about to do chins you will be spent from all the other exercises before that.
just some thoughts