H Rcaetano,
your models looks fine.
Filter on selection of curves allows for using multiple curves from a sketch/s.
You can also use Bi Rail Loft for this instead of UV.
And you can edit a sketch with out rolling back.
We will be very interested how you compare ZW3D to Catia considering the difference in market and price.
Never used Catia myself so no idea - but I think ZW3D is quite good at surface work.
Please report your opinion when you have it settled.
Cheers - Paul