Will the upcoming fundraising drive also direct German users to donate to the Verein, or will it direct donations to Florida? And if donations will be collected by the Verein, do they have a public budget or plan for spending that money?
German users will very probably give to the Verein again, and if the french association is ready, french users will very probably give to the Wikimedia France as well.
Wouldn't it be better to give those willing to donate two links - to the Foundation and the Verein, with a description of what each does with the money?