I put it to you that a 100 fold increase in price is possible.
Of course.
BTC market cap right now: 5.1 Billion
For comparison, Apples market cap right now: 700 Billion
http://www.macrumors.com/2014/11/25/apple-market-cap-700-billion/So after a 100 fold increase in price, all coins combined are worth less than one major US company.
Not that i compare BTC with a company. Just to give a little perspective in the amounts of money out there.
So do your math, and act accordingly. Then just wait 5, 10 or 20 years... Good Luck