Dude, seriously, don't risk your whole family! If it flies or floats, its much cheaper to rent. If you really want to go on ski trips with your family, buy them all tickets on a 121 airline. I've attended way too many funerals and investigated way too many G/A fatal accidents under circumstances for which you are considering. Marginal performance, unknown quality maintenance and less reliable, non-turbine engined airplanes are not worth wiping out a whole family. Just my honest opinion after 30 years in aviation.