Your minivan will not safely tow that trailer. I have had a suv that was too small for my tt (and my specs had more room and capability than yours). I was pushed and pulled all over the road by passing cars, suvs and semis. Every mile was a fight to keep the rig on the road. The trailer pushed the suv all over the place. The final straw came when I struggled my way up a mountain only to be pushed back down it on the verge of out of control. Never again. Less than a year into ownership, the decision came for a new tow vehicle that we really didnt want to do either. I guarantee that if you buy that tt it won't be long til you either get a bigger tv or get rid of the trailer because it was such a bad towing experience. That is if you didn't wreck it.
For gear, it adds up really fast. You will want things to cook with (pots, pans, plates, cups, silverware, and maybe a grill), chairs to sit on, toiletries, clothes and toys for young kids. This stuff adds up really fast. My family of 3 mostly weekend camps 1 time per month and takes 1 week long trip per year. We had 1300 lbs of stuff added to our tt (weighed it at cat scale day it came home with nothing in it but propane and battery and again fully loaded recently). We don't say these things to keep people out of camping, we say them from the experience of having been there, done that and trying to keep someone else from making the same mistake we see every day.
I understand not wanting a new vehicle and not wanting a rig that doesn't suit your needs, problem is, in this case the two do not coincide with a safe vehicle/tt combo. And don't believe the man who's paycheck depends on selling you the tt. I've had salesman try to tell me a truck with 1500 lb payload could tow any 5er on the lot simply because it was a diesel. I've had them try to sell me a tt who's dry weight was 500 lbs under my max tow capacity (without taking passengers, factory options etc into account). Please listen to those that are really trying to help you. If it was safe, we would give our blessing but it's not and our conscience won't let us lie to you.
From a money standpoint, don't ever go into camping because it's cheaper. Point blank, it's not. The expenses add up quickly. To us, the family time is worth every penny we have sunk into this hobby but it is very expensive. Your fuel bill alone will surprise you, on average the gas engines get around 8 mpg when towing. Campsites are anywhere from $25/night in a state park with little to no hook ups to $40-50 per night in an rv resort with amenities and hook ups. Beach sites are over $80/night. Disney camping is at least as high as beach sites per night. Rv need lots of time and maintenance to keep them in good condition and once your 1 yr(in some cases 2 yr) warranty runs out, you are on your own for repairs. Best of luck to you.
2014 Silverado 3500 Duramax, SRW, Crew Cab, 4WD
2014 Palomino Sabre 34REQS -
2011 Crossroads Zinger ZT26BL - sold in 2014