Hi, we've just bought our first caravan, well, ordered it, an Avondale dart 556-6 (MRO 1070kg, MTPLM 1300kg). We're planning to tow it with a Renault Grand scenic 1.9 dci (kerbweight 1530, max towing limit 1300kg). Well, I thought we'd done our homework and found the right outfit, but from what...