Dont be put off by the fecal matter..
Thats what happens when your blood is fed more often than not. Not to mention something like this wont happen more than 2-4 times a year. While almost all other snakes will deposit fecal matter almost weekly! When fed properly you'll find yourself mostly cleaning up a urea type fluid and dirty worn out substrate.
Feeding an adult animal 1-2 times a month... using a food source that doesnt leave a large lump in the animal (p/k is much more digestable) will yeild average to smaller sized deposits.
Dont let some smelly turd keep you from owning a really rewarding snake!