You may want to edit this may be a typo you have 4 days of upper body push. <aybe you meant:
Day1 Chest, Day2 Bi’s,Day3 Shoulders, Day4 Legs, Day5 Back, Day6 Tri’s
I would say if getting in the gym is an issue here is a good setup…also I like this setup to get more rest days in.
Day1 Chest/Back (I will do 3 sets chest then 3 sets back, and repeat 2 more times)
Day2 Rest
Day3 Legs
Day4 Shoulders,Bi’s, and Tri’s (no need to overtrain your arms here…they get a lot of work on Day1 I like 3-5 sets for each bi’s & tri’s.
Day5 Rest
Day6 Rest
Day7 Chest/Back
There are a million ways to structure an effective workout plan…just make sure you are giving each muscle group enough time to recover. What may work well for someone may not as well for someone else. Just make sure the big lifts are a part of your routine squats, bench, dl’s, shoulder press, rows.
Also full body routines are great to pack on size…there isn’t as much isolation or volume but the key is the frequency. Here is a very basic example of one…keep in mind each day you can add in 2-3 sets of accessory work
Day1
Squats 5 sets
Flat Bench 5 sets
Rows 5 sets
Day2 Rest
Day3
Power Cleans 5 sets
Shoulder Press 5 sets
Lat pull downs 5 sets
Day4 rest
Day5
DL’s 5 sets
Incline Bench 5 sets
Rows 5 sets