On random 4 days of the week: Spend 1 day doing chest: flat/incline/decline bench press, flat dumbbell press. also do situps on decline bench, hanging knee lifts. 1 day arms: preacher curl, skull crushers, seated dumbbell curls, cable overhead extensions, 1 day back: pull downs, pull ups, seated cable rows, dumbbell rows, hyper-extensions 1 day legs: leg extensions, seated leg curls, barbell lunges, squats, seated calf raises. Been doing this for bout a month. Any suggestions on exercises to add/remove, or to change days around? also, any tips on which order I should do these in? I normally do them on 4 of the 5 weekdays.