People who previously have made icons for free will now want some of the money, and you only have enough for about 10 people for a year.
I've seen too many companies get money and suddenly, instead of being extremely frugal like they used to, because they had to be, start spending money because they can afford it.
And then the company dies.
This happens to lottery winners too.
Do you have plan to avoid it? You should plan to make the $1 million last at least 10 years without earning any additional money except interest.