Belìn

Hallo everyboby,
this year I've crossed 2 different selected strains obtaining a very good F1 hybrid.
For the next one I wish to cross this new hybrid with a Nepal (as original as possible) strain.
So 2 are the problems:
1)Where can I buy Nepal seeds?In some strainguides I've seen the "M1 Nepali" produced by The Super
Sativa Seed Club but this breeder doesn't exist more and I can't spend my next holidays in
Nepal.
2)Shall my future new plants have the hybrid vigour or it's better waiting some generations for
the stabilization of my F1 before I recross it?
Thanx & excuse me for my eventual english mistakes.