I almost forgot, if you DO load the trunk down with a lot of weight or get a couple of heavy passengers in the back, you may rub when going over dips, bumps, etc.
Since I hardly ever carry anything in the trunk and rarely have any passengers in the back, I've only rubbed once, and that was with a combination of the above (couple of 200lb.+ in the back along with some luggage going over a dip a little too fast). That was also with it lowered...
Otherwise, you should be in the clear!