Just starting All Pro's, Diet Question

I have dabbled in weightlifting and working out in the past, but for the most part have lived a sedentary lifestyle, especially this summer. I'm tired of being ashamed of my body. Tomorrow I am going to start the Beginners routine. But I need some help with diet.

I am currently 18 years old. 5'10", 155 lbs and about 16% BF.
Also as far as nutrition goes, I just threw away all the junk food in my house.
Should I start out just eating at maintenance? I was planning on trying to get like 160-180g of Protein, 60-70g of healthy fats, and 250g of Carbs.
My metabolism doesn't seem that fast, so unfortunately I seem to put on fat easily.

Any advice or tips are appreciated.

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