I would concentrate on doing more efficient exercises.
Instead of just db squats w different stances for legs, do:
BB squats, Hack squats/leg press, hamstring curls/RDL's, and calf raises.
Add in some various pressdowns for triceps.
Start off with Barbell rows or deadlifts instead of chest supported db rows for back.
Start off with Barbell bench presses (or atleast db benchpress) before flies.