I carry a similar sized motorcycle on the front of my motorhome at times (and did for many years on my old E350 van pulling a TT). I can obviously see the bike, but it does not obstruct my view. There is some interference of lights, but not a big deal. I've driven at night without problem. I have noticed no cooling issues.
The only time it's weird is when I carry a bike on the front of my van with no other load in it. It squats significantly, but still works fine. On the motorhome, it doesn't affect it at all, if anything it's good to get some weight up front to help balance out my 10+ feet of overhang in the rear lol.
If you use an extension on the rear carrier, how will you get into your camper?