Hi, Looking at a used 2007 sienna @ 105K miles, xle limited awd (top model) in a few days, priced around $8000 USD (here, $10000 CAD). Used cars in good condition seem to go for a bit more here in Vancouver because of the mild weather and therefore good vehicle conditions. This sienna seems to be in good condition physically, so probably will offer somewhere $7200 range (sound reasonable?)

But problem is I won't be able to have a mechanic do a PPI as I have to drive quite far to see it.

Please help me with some tips a non-mechanic do without a mechanic at the test drive? I just purchased an OBDII scanner and have watched lots of videos recnetly about siennas and feel like an amateur expert (yikes!). I plan to

check the oil

under the engine cap,

fluids,

listen for unusual sounds,

check for oil leakage on top and under the vehicle, 

check for rust under vehicle

check the hoses / drive belts for deterioration

check wheel well and strut/ball joints that I can see

check the OBDII scanner on startup and after the test drive for codes (I won't be able to understand them mostly but at least can see if there are any trouble signals)

And of course drive the vehicle... Hard acceleration, hard braking, on highway if possible, full turning, check the alignment.

What else can I look for? I know I won't be able to replace a real PPI by a mechanic but hope to not miss any BIG problems. Any help appreciated, thanks much.