They are already better off than those people you're looking down your nose at. According to salaryexpert.com the average wage in the state of Hawaii is $65,015/yr or $31.26/hr. You know those jobs are paying lower than that average. That same site says that the average public school teacher wage in Hawaii is $66,712/yr or $32.07/hr, so slightly above the average wage and definitely already more than the unwashed masses you look down on. But you want to take more from those people so you can be even higher above them.
By the way, your initial premise was that you should pay teachers more so they can create better outcomes for their students. Are teachers really going to do a better job just because they get paid more? I say no. Number one, when Hawaii's public school teachers have won raises in the past, there was absolutely zero discernible effect on outcomes for their students. In addition, much of my life private school teachers in Hawaii on average actually earned LESS than public school teachers, but their students had better outcomes, to the point that many public school teachers were sending their own kids to private school. To me, that says that the socioeconomic circumstances of the students, rather than the pay level of their teachers, was far more important to the outcome. Salary Expert says that private school teachers in Hawaii are now on average making $67,626/yr or $32.51/hr, so only slightly more now than public school teachers, and yet their student outcomes are still much higher.
As for the jobs you turn your nose up at, do you ever consider why those jobs exist? It's because they're needed. Somebody has to work in the stores, perform janitorial duties, etc. If everybody is going and getting college degrees and only working white collar jobs, who does all those other functions? Also, if everybody is highly paid, then nobody is highly paid. I do believe that teachers should be able to live without struggling. I just don't think they need to be able to afford BMWs or the like. And unlike you, I also believe that the regular people of Hawaii also deserve to live without struggling, and that we shouldn't add to their financial struggles just to put teachers even further ahead of them than they already are.
By the way, I'm not advocating for a socialist/communist utopia. I do believe that choices have consequences, such as getting a college education or not. I just don't believe in taking from the poor to give to those who are already better off, without giving them a choice. Aside from moving, these people can't get away from higher property taxes meant to pay public servants, including teachers, more even if they rent instead of own; as I said earlier, landlords will just pass the cost along. On the other hand, if employees of a business want to get paid more, whether through negotiating with management or raising the minimum wage, the business owner can raise prices to cover the additional expense. Those costs are paid by customers, who do have a choice of either paying the higher prices, going elsewhere, or just not purchasing. And if the pay goes too high to where nobody will pay the associated prices, the business goes under.