Brake lines will be fine at 2.5. Probably wont need a tc drop either. No need to do anything involving the pitman arm. Im a big advocate of getting an adjustable tracbar at any height over stock. At 2.5 keep the stock control arms. At 3+ is when you should get longer ones. Spacers have no negative effect on coil springs. Shackles wont hurt an aftermarket leaf pack. Id recommend shackle relocation brackets over shackles though. They will give you 1 inch of lift and greatly improve ride quality.
08 WK 4.7 QTII - 4" Superlift - JK Moabs - 265/70 Cooper AT/3 - Flashpaq