Beautiful van! I think mine is the same color (black metallic) and is a T&C Limited AWD that I've modded a little. It was rusty when I got it and got worse, so decided to have some fun and make it more utilitarian than pristine. It's a 2004, the last of the AWD vans for a great while and the last year before stow and go. It has the DVD player and monitor. I can't imagine why a van would have the DVD player and no monitor, unless the player was swapped in at some point? My DVD player is separate from the radio, down over the cup holder and holds 5-6 DVDs in it. It may have some RCA inputs or outputs on the front of it, so that might enable using an external monitor. I never tried it and barely used it (only used it the night we bought it coming back from Moorhead to St. Cloud).
2005 and later 3.8L engines have a habit of using a lot of oil. Even though mine is a 2004, it used a lot of oil at first because it wasn't driven much (probably someone's extra winter vehicle). I had to add oil for the first half a year to a year, until my daily driving it loosened up the rings and it doesn't use much oil between my biannual changes now (spring and fall). I use either 5w-30 or 10w-30 in the summer, and switch to 0w-20 in the winter for the subzero starts. I once left the FULL SYNTHETIC 0w-20 oil in until July one year, and the engine ran great! The temps were around 80*F. This is a van with 200,000 miles on it too, currently at 221,945 miles. I also added a battery wrap thing that you plug in and it heats the battery to help with cold starts. That was necessary when I had to start it on some mornings when it was -45*F, and I also have a block heater that was plugged in, too. People might say these vans are old, but if you maintain them they will last a very long time. So, keep some oil on hand for the first half a year or more and check the level often. Over time you may find the consumption diminishes.
Since it hasn't been driven much, it may also have blow-by until the piston rings loosen up. This means the PCV valve will blow used oil into the intake plenum via an upside-down U-shaped hose on the top of the plenum going to behind it (rear valve cover). It will dump oil into the intake and make it gummy. I found standing oil in mine when I removed it (the plenum) to change the spark plugs. You could make a catch can to keep the oil out of the intake, or run it into a small vented bottle and plug the hole in the upper plenum where the hose connects. When it stops putting oil into the small bottle, then it can be hooked back up like stock.
The transmission and power steering should take ATF+4 fluid; use ONLY that fluid and not the "universal for all models" fluid. Have a proper transmission service done (pan drop, filter change and new fluid) I think it is at 90,000 miles now? On my 3rd gen van it was every 60,000 miles, and it was used in severe service (stop and go, towing a little, loaded down to help move things, big temperature fluctuations). That van has 225,000 miles on it and still drove great. Reverse is weak in these transmissions (only two friction disks) so avoid backing up hills with a trailer or fully loaded if you can. The transmission coolers in the later vans (2005 and later) was paired up with the A/C condenser and sometimes leak. If it does, people have just disconnected it and installed a standalone aftermarket cooler instead as a cheaper alternative.
If the brake fluid looks dark in the reservoir, it has absorbed water and should be flushed. The calipers are the first thing to get water in them and seize up, so even though the van has low miles, the age of the fluid and time might have allowed it to absorb water. Flushing/bleeding the brake system will keep fresh fluid in all the parts and keep them from rusting internally and seizing. I just had my front calipers start seizing up on me last year, when they were about 11-12 years old (autozone calipers). Replaced them both and no problems with them since.
Don't forget to check the spare tire too! On the stow N go vans, it is under the FRONT/middle of the van towards the driver's side and is a space saver spare. If you want a full size spare, you'll have to get your own and store it inside the van (for long trips?).
Here's my van. This was before I hit a deer and wrecked the front passenger corner, door and fender. I replaced the door and fender, and the strut/hub, and still have to replace the bumper cover and headlights. This is back in her prime, the 2nd year I owned it after lifting it that spring.