Question about Tire and a wheel combo

Hey all. Just had a question about some wheels and tires I just bought on line. I am pretty sure I am safe with the size, but wondering if anyone else has the same sizes and there thoughts. I am also putting a toytec leveling kit on shortly.
I bought GA7 in 20 inch with the tire being P275/55tr-20.
These will fit ok on my Crewmax right...LOL yes I am a complete novice. Thanks ya'all.