I am envious just reading these posts. We spent 5 weeks travelling around Sicily before Xmas and absolutely loved it. You are right - the ferry to Corsica then to sardinia and onto Sicily is a great idea. Winter ferries tend to go from Toulon and I will definitely go this way next trip down. seriously unlucky to encounter bad weather. Two days of rain in 36 days Swam in the ocean - water temp 21 -22 deg.
Things we did differently.. changed from Vodafone to Three to take advantage of their free to roam package which mean we could use our UK minutes and data on the road. We have since been in Spain for two Months as well as France and have saved a fortune.
I dded to Apps to my phone which turned out to be invaluable. Camperonline and Park4night. between the two we free camped for 4 of the five weeks we were there.
Sicily was very safe and at no stage did we feel otherwise and we parked up in some very out of the way places. Driving is challenging in that they are very aggressive especially in Palermo but just be very positive in everything you do and the will get out of your way.
Must see places . check out my blog www.bazjancieandmilo.blog.com
Dont - take a motorhome into Taormina - park at the funicula below - we stayed two nights with no problem.
That was the only hassle in our trip.
I have yet to finalize the blog but one place you must visit as you return to Palermo is Cefalu. There is paid parking on the wstern end of town and aside ffrom the fact that it is a fantastic palce it has the best wine bar ever - le petit tonneau...have a glass or two of bubbly and watch the sunset from the balcony.. You wont want to leave.
PM me if you have any questions or you would like info on stops