I've heard that I wouldn't need to extend the brake lines do to that they are already extremely long from stock.

I am choosing the Claytons kit because its a triangulated 4 Link rear long arm w/ a Radius style front 4 link long arm. Im not to keen on the crappy A arm style upper rear arms everybody else uses in there long arm kit. Also i'm not a big fan of IRO's front 3 link Y setup either. I think the Clayton kit would be the best kit for me personally in what im looking to do.

Is there any other concerns I should be looking at?