Also consider the possibility that your odds of landing this six-figure position won't change if you spend another year in medical school. If you forego residency you can still continue with your endeavor, with the possibility of returning to medicine if that doesn't work out for you. If you quit now, you won't ever have that as a "back-up".
Another thing I'd mention for anyone in the future who may read this thread looking for advice is that it's easy to superimpose the way the culture of medicine works on other careers. What I mean is that a lot of smart, hardworking individuals graduate high school, apply their intelligence and work hard and get into medical school. With medicine there's a very high correlation between intelligence/hard work and success, with pure luck being a minimal factor. Often people (not necessary the OP, since I have no idea his history) will only have this experience that they will project on other paths (i.e. as long as I work hard I can do whatever I was, which to an extent is true, but its application is much, much different in other fields). The correlation of hard work and intelligence to being succcessful in other fields is significantly less important than it is in medicine, especially in business. Working hard and being smart in medicine will guarantee you just about anything (as far as being able to go as far as you need to, roughly be able to be in whatever specialty you want, but ultimately have security and be able to make money), but in the business world being intelligent and working hard won't necessarily guarantee you anything. In medicine it is necessary and sufficient. In business it is not always necessary, but it is most certainly never sufficient.