Your front splitter (plastic above the front air dam) would impact the driveway before the rack would ever scrape.I considered the stealth hitch, but with the bike rack installed, I could picture the bottom of the rack tongue extension hitting the pavement when making a sudden transition on a short steep driveway. That looks that is a possibility from your photos.
The OP is definitely not going to have a problem with as high as that rack sits. My rack sits much lower and I haven't had a problem yet.