Any weight listed on Nada or elsewhere, is just the boat, dry weight.
You need to add the weight of fuel, batteries, gear, trailer, spare tire(s), etc.
And if it is an outboard powered boat, you need to add the weight of the motor.
So your rig is likely well over 5000#.
You should load it up and go weigh it.
For a few $ you can get it done on a truck stop scale, or a scrap yard or feed mill.
FYI, a vehicle's listed tow rating is based on an tow vehicle that is otherwise empty.
You add passengers, gas, cargo, luggage, coolers, toolbox, etc, and you need to subtract all that weight from the listed tow capacity.
So, bottom line, you aren't gonna tow it with a mini van.
You need to be looking at a tow vehicle with a 6,000# rating.
Also, most all wheel drive vehicles usually have a lower tow rating than their counterparts.
And a front wheel drive isn't going to do very well on the ramp with a boat that heavy.