Joe, I wouldn't take two days off in a row. Stick to a 2 on 1 off. Don't worry about actual days in a week. Just look at it like day 1, day 2, ect. I also wouldn't pair back and shoulders together either. Keep in mind that muscle mags are usually written from tiny 180 lb guys who don't know shit about lifting. Try and steer clear of those magazines when picking a routine. They promote stuff like doing dumbbell presses on a exercise ball for the best mass and bullshit like that.

lmao i love those magizines their just funny most of the time to look at seeing people trying to workout on those huge plastic balls is funny i couldnt imagine picking up dumbells and attempting some of that stuff. why dont u do chest and back, then calves and the rest of your legs, then bi's tri's and shoulders. dont forget your forearm though too. i would say maybe throw in a little cardio but your working out for mass and strength now so u might not want to do that

Hahha, well said that is.

If you can incorporate a 5-day split, that will accomplish the "no two days off" thing:

day 1: arms
day 2: shoulders
day 3: chest
day 4: off
day 5 legs
day 6: back
day 7: off
day 8: arms
day 9: shoulders

etc....

(not meant to be a routine, I was just typing body parts as they came to mind)