I'd be interested to hear how much your bikes move once you install it. I have a front receiver for four bikes, but sometimes I have one or two more if the kids bring friends. Keep us updated!
I have one installed on our 2014 Lacrosse. It didn't take long to install but the instructions weren't very clear. I remember having to switch where some of the bolts went because they didn't fit where the instructions showed them going. I use a 3 bike rack with mine and there is very little movement of the bikes while traveling. I mounted mine as close to the trailer as possible so that it wouldn't interfere with the WDH. I have an Equalizer Hitch and didn't want the bars hitting the bracket. So far I have had no issues with using it.