well, first of all, I'm not gonna argue that FBWs are better than push pull and upper lower split, I really like all of those. Body part splits may work very well if your main goal is size AND you have some experience. Another thing is that it has to be properly designed, big compound lifts and some isolation, not the other way around.
What is your experience? How long have you been lifting, what is your squat, dead and bench number? chinups, rows, etc?
so you have to determine if your level and goals fit the body part split.
your split is pretty "big" IE: you do back and chest one day, that's almost like the entire upper body. then legs, which is lower body, then shoulders then an arms day. I don't think you need an arms day with just arms unless you're very advanced. What I think is kind of weird is that you have two big days (back chest day and leg day) and two pretty small (shoulder day and arms day)
with an FBW you usually lift 3 days a week or every other day. You can do more (high frequency training) which can work awsome if you do it right and you have the experience to deal with it.