I like the way you think. I am a professor of strategic management at the undergraduate and graduate level, and I can't tell you how much I have to tell my students that it's not about the profits (profits are important, but it's not the only driving force. In fact, the companies that focused too much on the bottom line often failed - think GM and Chrysler), it's about the attention to details. If you focus on all aspects of the value chain and be the best at each level, the profits will follow. But it takes a well thought out strategic plan.
That said, to the OP, I've noticed that you're too focused on not hiring help. To get the jobs done quickly (2 hours with all of that service is likely impossible at a certain level of quality that people will want to return for future service at that dollar amount), you'll need to hire help. You need to learn to trust. If you train them to your level of satisfaction, it will be well worth having some assistance. Trust is extremely important when hiring help, and that takes time to build. Don't be scared, and try not to micromanage their work. If you hire the right person/people, provide proper incentives, training, and autonomy, you'll be surprised by the level of quality you can get out of them.
