What I'd do:

In the next 300 miles: change pads/ resurface or replace rotors (new rear set already included).

To drive another few years: Replace valve cover gasket. *Sometimes* smell oil burning on hot engine/plugs? minor leak from back of engine when I park on incline at my parents house - no oil apparent when parked flat in my lot. My guess is valve cover gasket since I saw oil on plugs as well. Could be anything - you're welcome to check (I can't see where it's coming from).

Ignore the abs light - it's intermittent and goes off (i.e. in December I drove it for 15mins and then got my VA inspection once it turns off) No issue in normal driving. Again this could be a sensor or jsut triping becase the rear pads had no meat. However I lean towards the sensor as it's done it since I bought the vehicle - but the pads may have been low all along...your guess as good as mine but google reveals it's common and fixed by one of the two solution I listed usually.

Ignore the valve tap - fact of life in these cars.

Enjoy it - gas isn't too bad, you can tow, have space to store stuff. 4wd works great. This thing trumps my 2001 3.5 LE pathfinder I used to own in everything except for looking new. The pathfindiner SUCKED in snow - I'm sure do to the crappy tires it had. In the rodeo this year I passed stuck SUV's/cars on about a 40 degree icy hill. Cars were stopped and sliding downthe hill from their own wight and I had total control to maneuver and grip - probably could've towed someone up that hill.