Here's my answer -

If you want 35s, you will need to lift. If you want to keep it super low, the RK 1.5 is great. However, its not much lift.

I would suggest a 2.5 for your purposes. I had the RK 2.5 X Factor for a year and loved it. Peter Carolina, my brother and the owner of Sweet Pea, always says, BB was at her best, with the 2.5 and duratracs. (eventually changed to coilovers and 3-link suspension and 37s)

We drove that configuration cross country. 29 hours to Colorado non stop. It was incredibly street worthy. Add that BB was supercharged with 320 whp, you can imagine we were speeding the entire way. The suspension was unflappable at high speed.

I dont know enough about the metal cloak to give a real long term opinion. others here have it tho.