Put it together and then take a look at how much slack you have in the brake lines. Flex it out somewhere you have control of your suspension travel - ideally an RTI ramp but you get what I'm saying.
The front you ought to be able to tell pretty quick since you're basically pushing the "default" down travel by stacking spacers. The rear probably has a little more room to play with.
FWIW when I modified mine with 1 Rusty's spacer up front and combined a .5" poly spacer with extra coil isolaters out back I did not do anything in regards to brake lines. Granted, it's about a half inch under what you'll be, but I don't have any issues - and it's been tested..........I've never disco'd the sway bars, but I've wheeled it hard a few times since the modification.
My Build Thread WK
My Other Build Thread XJ
'01 XJ with some stuff
Sept 2013 Cherokee of the Month
'07 WK with some other stuff
~RED WK CLUB #7~
'11 KK with mostly stock stuff
'06WK our first Jeep with stock stuff - totalled and gone