Congrats on the new QX55, that styling is killer but yeah, the roofline is a total headache for cargo compared to the old QX50. I've spent way too much time obsessing over rack clearances on these coupe-style SUVs. You really have to be careful with the hatch clearance on that Sensory trim because the spoiler swings up higher than you'd think. If you go with a box that is too long, it's gonna bite into the hatch when it opens. I would suggest looking into the Thule WingBar Edge Flush Rail System if you want that integrated look. It is super low profile, but you might want to consider that it can get tight with the sunroof. Make sure to test the tilt function on the glass before you fully torque the bolts down. Honestly, if you're worried about the finish on those rails, stay away from cheap universal stuff. The Yakima JetStream Black 50 inch Crossbars used with the Yakima SightLine Towers are another solid bet because they offer a bit more adjustment for the pitch of the bars on that sloped roof. For the actual trip to Big Sur, look at the Thule Motion XT L Cargo Box. It has a specialized base that lets the box sit further forward than most, which is basically mandatory for the QX55 if you want to use your trunk. If that's too pricey, the Kuat Vagabond X Cargo Basket is a sleek alternative that won't look bulky. Just be careful with your budget tho, as bars and a high-end box will definitely push past 900 bucks. You might have to hunt for a deal to stay under that cap... but definitely dont skimp on the mounting hardware.