This is a very big personal decision, we spend a lot of money modding our trucks and it should be for us and nobody else.
What you are talking about is more of a street look, you would run 24's with street tires like you would see on an Escalade a lot. This is a very different style than trying to lift it and get aggressive stance and tires.
You can run 24's with street tires without anything and 26's with street tires with a level. The tires will end up being low pro, but that is the look you would be going for in this case.
If you are looking for a aggressive look without a lift, the comment above is right on, do some 20x10's with 33's on a level and you will be looking good.