Skinnyfat noob here, I'm debating getting a costco membership

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Skinnyfat noob here, I'm debating getting a costco membership so I'll always have enough to eat. What I really want to know is if they have good meat, I'm planning on buying a lot of chicken breast there but is it good stuff? What I mean is is it free-range and not the shit you buy at walmart for $2 a pound that's pumped full of chemicals and steroids? I don't want to grow bitch tits from eating chicken that's had it's hormones fucked with.

On a side note, rate my diet
>Rice
>Chicken breast
>Some type of beef, not sure yet
>Tuna
>Sardines
>Eggs
>Kidney beans
>Cabbage
>Spinach
>Lettuce
>Broccoli
>Bananas
>Red grapes
>Peanut butter
>Dave's Killer Bread
I'm aiming for 2700 calories and 100g of protein a day.