How hard is it to stucco on the outside of a house, and does the product come premixed?

Answer 1

Find out where they're doing this type of work and go and watch. Ask them these questions like I did when I started out in construction, they'll be glad to help. That should answer your question. A job like this is better left to professionals that know what they're doing, it's a type of job that requires a certain type of experience and training.