First real cut - Need lots of advice

[FirstTimeRage]

Okay so here's the current stats

22 years old
5'8
180 lbs
15-16% bodyfat

I Have tried to diet and get a lower bodyfat several times, I just cant get it right.

Im assuming my dieting fails because I under estimate the amount of calories my body needs to efficiently lose weight and still have energy.

Before i go ahead and try to post a diet up, Can anyone tell me the amount of calories I should be taking in?

I have a very stationary job, sitting for the majority of the day.

I workout 4-5 times per week.

my plan for working out during this cut is to focus on compound movements, not so much isolating the smaller muscles. (is this okay?)

for example -

Monday - chest:
Flat bench - 3x8
Incline dumbell press - 3x8
Dips untill failure x 3
Cardio after workout (30 mins) medium intensity

Tuesday - off (cardio 30 minutes) abs

Wednesday - Legs:
Squats 5x8
Leg press 3x8
leg curls 3x8
Calf raises 3x8

Thursday - off (cardio 30 minutes) Biceps/Triceps

Friday - Back:
Deadlift - 5x8
Lat pulldown - 3x8
Rows - 3x8
abs/core
Cardio 30 mins

Saturday - Off

Sunday - Cardio 1 hour medium-low intensity / Delts

thanks in advance I look forward to getting this going, of course there will be pictures along the way.