excluding Delta 1st class..... 600-700# full fuel useful load >800nm range and only need 2 comfortable seats for 6' adults. Looking for ideas - prefer fast single. Piston or TP. Not afraid of an experimental or certificated conversion. Bonus points for low acquisition/operating costs. Also please describe which model Bo with engine and fuel capacity. Can't justify expense of PC12/Meridian/Cirrus Jet/King Air. Not flying overland down Mexico. Thanks!