Nice boat Jed, Ive just sold mine, with a 90 Etec, you'll have lots of fun with that. Mine with a ski prop, 6 up would happily sit just under 30 knots all day.
Ive been to Lake Garda, but I hired one of their boats. I go to Lake Annecy every year and can highly recommend. I need insurance, lake map, proof of purchase, international licence and ski flag. Im sure garda's not much different.