If it's REALLY clean and well maintained, $3800-$4500 is what they typically bring around here. Average condition, around $3000-$3300ish. If it were an Edge or Havoc boat, you'd see another $1000 added to value (according to demand). Not saying War Eagle is a bad boat; they just don't have the demand that they used to. I'd still buy one if I were buying a new boat because there's features that I hate about the other 2 aforementioned boats-at least for what I do with a boat.
The 4 stroke is a heavy beast of a motor on just a 542. It works excellent, but it's heavy. And I hate pod seating, especially on a 542. Once you put a tank and a battery back there, there's no place for your feet. Or if you take an extra buddy and put a seat on each pod, you're bumping knees. Also those pods are a duck hunting thing; meaning if you were to end up selling it later to upgrade to a 548, it might affect resale a little. Unless you're in duck country.
The trailer....it will work. Would like to see a Diamond City or something similar under that nice boat, but a haul rite has 2 wheels and a ball hitch so it'll get the job done.