The 210 is the ultimate of all single engine six seater's. You can put 6 adult's, full fuel ( for 900nm ) , and bag's and still use no more than 500m of the black stuff. I remember seeing the VSI somewhere around the 800fpm mark with the load i stated above.
So what you have a retractable undercarriage isn't it a bonus ? All that drag from a 206. And besides the 210 sound's great.