Your investment into the proper equipment is to be commended as is your ability and experience in avoiding an unfortunates accident. But , having to use special equipment to make a poor tow vehicle handle weights well within it’s “tow limits” is the exact reason I feel you shouldn’t use a minivan over 1500 lbs. They are a compromise vehicle, where even room is prioritized over handling and performance dynamics let alone towing. The best engineered minivan were the early mid engine Toyotas in terms of performance. Soccer moms voted for room over handling safety and fwd won out. Soccer moms will not dictate the safest tow vehicles…that’s done by physics fortunately and I will continually vote for rwd/awd drive trains. not to say a Vette tows better than a minivan, but at least that aspect works for and not against you.