All sound advice above.
One important issue not specifically covered in your "spec" is that of Maximum Takeoff Weight/Useful load.
Assuming you are intending to use both seats, it is worth carrying out a realistic assessment of a typical flight - your weight with outdoor winter clothing, flight bag, head-phones, knee board, wallet, mobile , packed lunch etc - ditto for your pax, an amount of fuel sufficient to stay airborne for say 2 hrs THEN see how that stacks up with the MTOW/useful load.
You will be surprised how many light 2 seater aircraft "fail the test" in this respect.