Bear in mind you will pay a big premium for the low miles E85 (saw a 35k miler 3.0i not even an SI on ebay for £11k), then pay a load more in maintenance, if its sitting outside most of the time not being driven thats a lot of money to sink on the car. You might make some back in appreciation over the years, but it will literally be, years.
I had a 65k mile E86 3.0si which I sold and for less than half the price of that bought an E85 3.0si with 115k miles on it. There is no difference in performance, handling, etc. and I dont feel so bad about that money sat outside for a week without use. It also had the benefit of having the vanos, water pump, all suspension parts, brakes, tyres, roof motor relocated, gaskets and tonnes of other stuff done that my E86 didnt have done - it is in better shape for the next 10 years than my E86 was.