Once again I am in need of advices. I am not familiar with wheel offsets and the more searching I do the more it overwhelms me

OK, I am trying to go for the "staggered" look so I call up a company to ask about their wheels (19x8.5 & 19x9.5). He said that it is 35mm all around. Is it correct that I need a 38mm offset in the rear for my coupe? What is the correct offset that I need for my car and do I need spacers to make some of the wheels fit? Also, I would like to know how I can fit the wheels that I want without rubbing and fill up the wheelwell gap and lower the car at the same time please. Thank you guys/gals for being patient with me

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