Personally I wouldn't leave it outside because it will rust and be very unreliable in time due to damp etc, and then there's the vandalism aspect to consider, not an issue for me but if i lived in a built up area I'd worry.

To be honest I don't see why you shouldn't buy a cossie IF you can afford it, nothing against rs turbos but it's in a different league as far as power, RWD, cost, maintenance and so on.

Everyones circumstances are different, but IMO I'd buy a cheap run about and rent a garage any buy an RS turbo, thats possibly the better option.