On a more general note (sorry if this is covered elsewhere - couldn't seem to find anything recent):
having bought a virtual brevet, is this vb 'committed' once I send the form in stating that I intend to do my DIY by GPS on? If it turned out to be icy, and I DNS my DIY on the stated date, does the vb become invalid for the same route on another day, or a different route of a future date.
Is the DIY by GPS route checked by the organiser on receipt of the form with gmaps route URL, & what's a good rule of thumb minimum time before ride to submit for route to be approved?
Don't send in the entry until you are sure you are going to ride.
I've often sent them in the evening before.
Some people submit them 5 minutes before going out the door.
The entry only needs to be submitted before you set out, not weeks in advance.
Regarding route checking: You don't need to have the route pre-checked; it's your responsibility to ensure it meets the requirements.
However, many DIY orgs will happily do a pre-check for you, before you submit an entry, if you feel a little unsure about it.
If you want the org to pre-check your route, I'd allow at least a week.
If you are sufficiently confident, just submit the entry and ride.