Platnium or 'included' towbar is the min spec 1600kg (ie, box trailer) one. Not good for recovery work . Not to be trusted for off road trailer towing.
3 tonne tow load is more than the GVM of the vehicle, and 10% tow ball mass means the car is fully loaded with just that trailer - ie, no room for clothes, kids, food - BEER!
7 seater means no room for left for water or extra fuel tanks.
Side steps are for Toorak use, so the ladies dont flash when they get in when wearing their LBDs, unless they want to of course. The side steps should be seen as sacrificial, their mount point is not strong enough to take much more stress any way. (remember - no real chassis on these models) .
DID models and the auto is the way to go. Modern 4WD autos dont just free wheel when going down hill like the old ones used to, so they are better than manuals in most situations. Unless you do rock hopping (not a Paj or any other IRS 4WD strong point) or bog hole running every 2nd weekend, the auto is best. For towing , holiday traffic stop start, sand and slippery surface work, autos have always been better suited. Down hill engine braking only is where manuals used to be best, but with ABS and unpracticed 4wd skills being more common these days, even that is no longer the case.
Options on the used model adds about $10K in 'supply and fit' costs, and the asking price is just that, argue them down.
If it was me, I would go new and minimum options, the dealer stuff is usually mid to low quality stuff and you get stuff included you dont need or want. Options I would go for are rear view camera, rear park sensers, dash GPS , but only if it can take HEMA off road data updates, rear DVD player if you have kids, cargo barrier ( seen one save a life in a roll over because it acted as an internal roll bar), rear diff lock . Non factory options I would fit - front and rear springs upgraded, snorkel, front and rear bars ( front alloy, rear steel ) , rated recovery hooks front and rear, bigger transmission cooler, off road tyres. I prefer to carry a hand winch rather than an electric one - sort of calms the eagerness a bit knowing if I get stuck I have to do a lot of physical work to get unstuck!
Last bit would be to get the camber of the rear end fixed. That is still an issue if one is loaded up a bit all the time ( the gear above will put 100Kgs into the car by them selves)
I would be saying the same if the tug proposed was a Prado, BT50, triton .