Proposal in the Cinque Terre/Vernazza area of Italy

Hello Tilderonis! I'll be in the Vernazza area of Cinque Terre next month. While there I plan to propose to my girlfriend :)

My current plan is to find a nice part of the "blue trail" with a nice lookout, track down a florist, and prepare that spot with some of her favorite flowers before we get there. Her family is joining us on the trip so I'll get them prepped as videographers. That night I want to take us all out for a nice dinner.

Okay so now the questions-
In general any potential snags you see with this plan?

Does it matter what time? I was thinking something in the late afternoon so we can do dinner soon after. Any issues with bugs or anything at certain times?

Anything else I can do or add to make the moment a bit more special?

For dinner I'm looking at Belforte Ristorante but definitely open to suggestions.

Thanks!