Right now, I'm thinking about hiring one of my "do-it-all" assistants/contractors that do all kinds of mindless/repetitive stuff for my projects. But I'm afraid they'll screw it up by spamming behind my back or would simply not do a good job.
What you are worried about is indeed the very basic concern of every employer - work not to be done right. However, when you hire people to do a part of your job, the concern always stays. In your specific situation, I guess, to hire a person do some of your "mindless", repetitive work is a good bet. If you manage to control their work - this option will work great for you.