Nice! Handling and comfort aside (because I never did a sidecar, and comfort is subjective), I think you made a great choice. These bikes have a nice powerband and chug along nicely at reasonable speeds.
You can lower always lower the forks up to ~2" which will reduce the rake a bit and I believe it will increase the trail at the same time. Options include reducing travel, top clamps that allow you to slide the forks up in the tubes or even having the tubes cut down. The latter two options will allow you to keep the original fork travel.
You can also do mid-controls and even make the 650 look more like the RE if that's what you are into. That's what is so cool about these bikes. Lots of options.
Personally, I built my bike to be more of a standard with the forks lowered 2" (cut down) and stock rear shocks and I think I handle great. Just like any other standard I've ridden over the years. No more floppy front end.