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Hasn't the MY10 got the 3.0l engine DI engine and the MY09 the 3.6l? I'd prefer the 3.6l over the 3.0l, but not sure if thats the case with the LPG models.
I wouldnt bother with paying for extras you dont need, $4k is $4k.
Is LPG mandatory?
Because if it isnt, you should seriously look at the SIDI engine models.
New engine with fuel economy easily in single digits, MUCH better drivetrain, and if you can pick up an International, good resale and nice creature comforts for not much extra.
I got a SIDI International Sportwagon, and love it! Go for a couple of test drives... the old clunker 3.6 and old transmission has NOTHING on the new SIDI combo. Much more responsive and more refined. But dont take my word for it, go drive one you'll see.