The probability of failure is high on this because you are using a part of the coffee plant that has undergone severe moisture and chemical changes during its processing. I'd go as far as saying its nearly impossible, since coffee has been fermented, sun or machine dried, and machine selected at origin. But most of all, failure of this experiment is due to the fact that coffee plants are developed not from green beans, but from coffee seeds, which are different and have not been altered in such a violent manner.
Very low chance of making it. Coffee moisture content for shipping is set at 11%, that is the standard for the 100 lb sack. The moisture content needed for a seed to stay "alive" and germinate is 25%.
You could get a few beans to sprout but it will be lesser number.
I planted like 20 seeds from some dry processed harrar in a flower bed. After like a month, one popped up, crazy cause I didnt even plan on it working. So I assume a dry processed bean has a better chance then another form of processing. Gurneys is a nursery company that sells coffee plants already started.