You will not be a millionaire, but I guess that you'll have a lot of money. 800-900.000$ is not so bad, don't you think? 
i think he will dump long before that happen, many will dump at 5k or 10k, only a few will hold until 100k, so he will not be a millionare
5k is also too high to expect, majority of people will sell their coins when it will touch 1000 usd price, and rest who have patience will hold till it reaches to $2k.