I had the Rhino Rack Vortex system with the RLCP legs. The front bar will use the factory points that are slightly behind the B-pillar, not the front-most mounting points in front of the B-pillar, inline with the sunroof. They purposely did that to lessen stress next to the sunroof. (If you pull up the roof trim you'll see the extra mounting points.) So, the front bar will be farther rearward than where your factory rack mounts now, FYI.
I'm changing over to a full-length rack (Gamiviti) so I can give my 17' canoe the widest possible mounting footprint, and also be able to load it from the rear without having to lift it off the ground. The rear bar of the Gamiviti should be rearward enough so the canoe won't hit the rear roof line while loading from the rear. I'm always loading the canoe alone, my kids are small.
The basic Gamiviti is around $1k but the 3-bar Vortex package was still ~$550 with the drawbacks stated above. Hope this info helps.
- Jim