I just got back into lifting recently but with my work I can only use my own dumbbells and I don't have access to a gym.

my workout is:

chest,tri's,shoulders Monday and Thursday

press 4 sets 12/10/8/6
flies 3 sets of 12
dips 4 sets
seated overhead press 4 sets 12/10/8/6
upright row 3 sets of 12
skull crushers 4 sets of 12
tricep kickbacks 3 sets of 12

Biceps and back Tuesday and Friday

bent over row 4 sets of 12/10/8/6
lying row 4 sets of 12
shrugs 3 sets of 12
bicep curl 4 sets of 12
concentration curl 3 sets of 12

Abs and legs Wed

squats 4 sets of 12/10/8/6
split squats 3 sets of 8
step ups 4 sets of 12
calf raises 3 sets of 12
crunches 3 sets to failure

I been taking Procell-8 muscle tech whey and celltech creatine, GNC multi

eating lots of fish mostly tuna, chicken, i'm not a fan of vegetables but I eat them in shakes.

I was just looking for advice/opinion on my routine, eating habits, and choice of supplements