Potcoin? Steem? No BTC? Really? In the past 4 years, what coins have doubled in value every year and maintained that (which is what I think you would need to happen). Take bitcoin. It hit a high around the current price in 2014. A year later is was down to around the $200 mark for almost a year and then started climbing again to where it is now. Cyrpto is not like "real world" investments and you can't treat it like that. So no, not a chance in hell of you achieving your goal. Unless, the world turns to hell and people turn to Crypto. But somehow I think that if the world would turn to hell, most wouldn't even have electricity and/or the internet so not like they could use it anyway.