Mattie,
How do you feel after excercise? do you feel energized or wiped out? How about the look of your muscles?? Are they stringy or are you getting hard?

You seem to do a lot of reps..if I were you I would take a week and raise my weight and lower the reps...say 5 sets of 5.
Then take a week and do what you are doing.

Then try a week of 2 sets of 15 per excercise..this is called undulating reps..you are getting all reps schemes.

Also , do 2 excercises per bodypart..can u superset at your gym? If so try this

Incline dumbell bench press rest 45 seconds
Lat pulldown rest 90 seconds



Do that for the rep scheme above

Then do
Close grip bench or dips..rest 45 seconds
Low cable rows rest 90 seconds

Agan for the rep scheme above

throw in some abs and calves and go home..

You can do this with any body part..bi's and tris,
legs and shoulders..

good luck