K.I.S.S. (keep it simple Stupid)
Monday...Upper body
Wednsday...Lower body
Friday...Upper body
Following Monday start:
Monday...Lower body
Wednsday...Upper body
Friday...Lower body
Alternate again the next Monday, Upper body, Wednsday, Lower body, etc, etc, etc,.
If so worried about where DL's fit in, than just don't do them. They are not the only exercise to get a huge back from. Never go to failure. Never have a seperate day for arms or a seperate day for delts. If calves are lagging than do them after each workout. To drastic ends, do calf raises/stretches throughout the day, every hour or so on a non workout day but do not do them in your regular workouts.
If you were doing a true full body workout, than Workout three or as little as twice a seven day week. Might consider;
Squats or BB Hack squats
BB rows or heavy chins
Dips (weighted) or Inclines
UPright rows or DB side press
Triceps French press (standing)
BB curl, heavy.
For the really bold hearted, who seek adventure in weight training and the maxium results in the shortest amount of time, might consider this:
Squat clean & jerk. 3X10-12 reps.
* caution this is a ball breaker. May also force you to buy larger suits & shirts before spring starts, Be Aware.
Good Luck.