Yes, you will be a millionaire but not in today's dollars.
In 2020 dollars?
The coins will keep creeping up in value particularly after the next halving, I think it's inevitable that the decimal point will be moved in the next few years as people make purchases with small fractions of a whole Bitcoin etc an easier system will be devised
Just a matter of time and why stop at 100 btc? A million bucks was a lot of money years ago but now id want more to consider myself "wealthy" in any capital western
city