I'd do that. Unless you really need a ferrari on the drive too!
I'm running the Series 1 original hood, and it doesn't seal particularly brilliantly. EVen so it's very rare that it rains enough to drip on me!
Besides down in Monaco, the Aero is top dog. The Ferrari on the other hand is just another one of many... Last time I was down that way when I arrived at the hotel the manager made the chaps on the valet parking remove a 430 spyder from the front of the hotel and put the aero in pride of place instead! Becuase (and I quote) - That is special, this is only a Ferrari...
