also after reading your last post, i would recommend working on getting
your license first if your serious about getting in the business- before you work on "getting big enough to quit your other job" seems kinda backwards to me. if you're getting big then surely you should have already had a license then?
ive been doing irrigation for 18 years and im still trying to "get big" LOL
the test is offered a few times a year. i would recommend the day before crash course study session usually offered you can look into. the insurance and bonding is optional if you are a sole proprietor (someone correct me if im wrong there)
but if you are planning on operating a business that is an LLC or INC. you need the insurance and bonding will be required as a part of the irrigation licensing