Kourtney Kardashian's got her brood a crazy Nantucket estate for July ... and Scott's there too!Kourtney's rented out a 7 bedroom, 8 bath Cape Cod pad, and it's pretty spectacular. The pics were enticing enough for Scott to ask if he could tag along, and Kourt obliged. The house goes for $6,600 a night, but we're told Airbnb hooked Kourtney up. East Coast, beware ... you've been invaded.