Paulhic,
No mate your wrong, the kerb wieght might be 1419kgs but the manufacturers MAX TOWING LIMIT IS 1300kgs, to exceed this weight is to break the law, and invalidate your warranty, also your insurance wont pay out if you have an accident.
If your confident at 100% towing then give it a go, but I still think your 1.6ltr engine is going to stuggle, go find a nice little slope and try a hill start, then think what it will be like on something a lot steeper.
good luck Tony A.