First Via-Ferrata set

[Hensem]

Hello everybody! My name is Stas,i'm from Israel and I need your help,guys.
In the next year I and my girlfriend want to start doing via-ferrata in Europe.Now we looking for good via-ferrata set.Maybe you can recommend which model now is the best for via-ferrata?And one more:my girlfriend's weight is about 47kg.A lot of sets start from 50kg.What to do? Buy set from 40kg or 50kg?Thanks.