Be a notary on your own
If you like to control your own destiny, becoming a notary on your own is a better idea. You will be more attractive to employers, because its very handy to have a notary on staff. Even if there is another notary on staff, that notary might be at lunch, out sick, on a business trip, or may have quit, gotten fired, or died when the company needs a notary. You really increase your chance of being hired and your value to employers if you are a notary.