I have used the RS52 at the kicks. I had them mounted with a swivel pod for testing. I like them more off axis.
Now I have mount them at the sail panels (pretty forward), facing each other and I'm very happy, much smoother than on axis at the kicks.
Don't worry about the high xo point. I usually use a 2nd order at 630hz and they blend nice with the midbass at the doors.
