First one would be 60-65% and second would probably be 65-70% density (approximately).

French lace is always a safe base to go - these styles don't seem to expose hairline, so french lace over swiss lace would probably be the best way to go for your first time.

French lace is a bit more durable than swiss. It is undetectable in my opinion, but swiss is probably more undetectable. The trade off is that the swiss is less durable and can rip and fray more.