Don't worry as fast as you burn alcohol it wont last long. Usually when someone gets a new alcohol engine theyll burn a drum just tuning their car in the shop.
If you'll install a 3/8 fitting on the plenum of your intake and run a hose back to the cab of your car with a gas ball valve on your end. You can heat up your engine in about 1/3 the time. When you open the valve it will give you a vacuum leak that will lean your engine. It will heat up aleast 3 times faster. Which means you use 3 times less fuel.