6" will work good. As for the smack talkers, I personally think the big tire little rim looks more redneck than stacks with clappers. 24/37 is a great combo, but can get crub rub which is why I went with a 22" rim, just something to consider when deciding on a size, I run into stuff all the time and would destroy the 24's. I'm running the 6" lift with 37's and only rub on the outside of the wheel well, which can easily be trimmed.