Need expert photoshop opinion?

Would it be possible to photoshop myself sitting in this chair (the right one) without people knowing it's a photoshop? I would like to know if can be done easily (not by me but to pay someone on fiverr or something, I know some photoshop but not too much). Also, they say good light would be the best to take picture with so it will be easier to photoshop. So should I take the picture of myself outside in the sunlight? Any tips on taking the picture? Of course correct height and angle but what other details? Also, the camera I would be using is Nikon D5100 or D5200. Any tips on camera settings? I would want to use the picture to show my friends on Facebook and wouldn't want them to be able to prove that it's photoshoped. Also if there's a better website than fiverr please tell me.
Thanks.

The whole picture looks like it's photoshopped already.

No, seldom have I seen an expert with Photoshop do work that is undetectable. You are a beginner and I guarantee you will not be able to fool them.
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Anything is doable in photoshop. You will need an expert for this. HERE IS THE IMPORTANT THING FOR THIS TO WORK PERFECTLY! You need to position the camera exactly how this camera was positioned. And i mean height and distance. You don't have to be exact, but close. Also, the seats are in shade. So i would stay away from taking a shot outside. You will have light and shadows on your body that wouldn't make sense in this picture.