Should you turn it over occassionally or just let it sit for the full 4 months?
*Big* ongoing debate on this in technical Q&A: http://ferrarichat.com/forum/showthread.php?t=268941 Enjoy!
Just leave it, why have it idle building up condensation. Nothing wrong with letting it sit for 4-5 months.
+100000 - if you can't get it up to operating temp by driving it (for 15+ minutes) not idleing it (for 1+ hour) don't start it- just leave the battery tender on it.
Just leave it Max. I've had cars sit for 6 months and fire up without a problem as long as you have it hooked up to a battery tender. We can't buy "gas stabiliser" here in the UK but never had a problem, we get pretty good fuel over here.
Unfortunately I started it before this thread I will take it out for a spin then when the snow clears. Snow tyres on the lambo though, so that is now worry.