I’d have to say that what Harris says is what I thought whenI saw your question. If a person is training and managing, and if they are getting bonus pay based on hours of training it kind of sets up a situation where they may feel economic pressure to put more effort into the training. What I have seen over the years is that an adequately compensated carefully chosen manager is one of the things that can really help a business do well. Sometimes it is the owner who does the hands on management, and hires someone to manage the training, and sometimes vice versa, but if you split it in two you can hire people who will do well for you what they do best.
Regarding the pay…. well, it is good if you are able to pay on the higher end of what the going rate is in your area, but I am sure you have researched that well.
Good luck, I am sure you are excited about your new venture.