First of all it's very rare to make 100k a year immediately after graduating college. Also I don't know how your adding up your numbers. If you make 100k a year for 8 years you'll only have 800k. Obviously you can grow a portfolio from 800k to 1mil but that's assuming you don't spend a penny of it. How are you going to eat and live?
The planning is so simply just 3 sentences and you expect to make million by working for people? This is a joke, if working for people makes you a millionaire then everyone can be millionaires. And the boss you work for, he will be a billionaire at least.
Slight problem, getting a job with that pay in your 20's is next to impossible.
by the time you are 30 a big mac will cost 100k better aim for 10 million
It's a nice idea in theory but try putting it into practice and it'll be a lot harder.
Fat chance you will start your first employment making 1 hundred k, next is the taxes that are due on any wages earned, then living expensives . wait you could be a star athlete , yes then it might work .
Are you planning on living with the GEICO caveman?