If there is air in the hood reservoirs, which isn't necessarily abnormal, it can get in to the line, particularly during transport, and cause these kinds of issues. The good news is that this usually an easy fix.
The first thing that I'd do is flick the brake levers vigorously for 20-30 seconds. If that doesn't firm them up, try standing the bike upright on the rear wheel and doing it again - what you're looking to do is to get the bubbles in the lines back up and in to the reservoirs, on the other side of the master cylinder. Flicking the levers agitates the fluid, standing the bike up gives the bubble an upwards path and eliminate "traps" where they might get stuck.
Brake rotor rub could be a couple of things - improper TA tightening, a disc that's out of true or a caliper that's misaligned. Check them in that order. Most often, it's just one high spot on the rotor that's kissing the pad. In that case, either pick up a Park truing lever or use an adjustable wrench to give the disc a little tweak at the high spot.