Sorry, my initial post was incomplete:
when I said day 1,2,3 and 4 these are non-consecutive days but Day#1 of training, #2 and so on (like Tue, Thu, Sat and Sun)
As for DL, yes it's in place of squats
ie:
4 days a week
Bench press or DB press
Barbell rows
Military press
squats or DL
Tue & Sat = heavy (sets of 2-3 reps)
Thu & Sun = moderate (sets of 5-8 reps)