You would have no issue putting a 1" puck in with the kit you bought, the brake lines will not be the issue, as you are limited on the down travel by the shock stroke.
You may find that you will need to adjust your Toe on the front tires, as it would cause them to point in just a little bit more, but that should get resolved at the alignment after you do the initial install.
With that in mind, you may want to give up on the concern of getting a scratch on the skids, that's what Mall-Crawlers do. Just saying, Scrathes and Shit Happens. I grew up wheeling at Walker Valley, I know all about it.
Thanks for the real knowledge!
I'm not worried about scratches on skids. In a weird sick way I like them, I used to trash my skateboards just for scratches when I was a kid lol.
Sounds like you know where I'm going, Walker, Evans, Reiter... 12" lift and 40's & portals get gashes out there too (they also go further, to places I don't have the nads for).
In the first videos though it seemed like that guy was taking the station wagon out. It really looked like if he had just a little bit more, he would have had a much quieter day. In the second video it looked "just" right. Any higher and he would have flopped onto his side, and lower and he would have been bumping off the rocks in a dangerous way.
I'm going to try the 3.5" no puck and 37's first and see how bad I really need a puck. It's easy enough to slap one in later if needed.
Who knows, I could sell MC springs and shocks down the road and put in some coil overs. Then I could adjust height for the trip.