It will surely be interesting how will the governments be handling all virtual currencies in times to come. Also, giving advice on bitcoin investment is by no means argumented through some solid economic knowledge, therefore it is pure guessing game and I would advise you not to invest a lot of money on this. Perhaps it is better to invest smaller amounts on relatively unknown new coins. Thus, if one of them makes it big, you gain a lot. If not, you lose a hundred dollars or so. Not a big deal.