In my opinion, take a look at bitcoin, bitcoincash and ripple in January

Long time means holding coins, in my opinion it`s very important to be patient and so this is a good way to do so. However, no one knows how coins will develop the next morths, I would spread therefore some money in altcoins (shorter term) and some money in btc

Very excited which trend it will follow; option 1 going up again near or over 20k, trend 2 down, but in case how far?

I don`t think bitcoin will replace gold but it will for sure become / remain a very intersting way of keeping / storing your invests safe - however, comparing tangible goods as gold with intangible goods as BTC is not always easy in all aspects. I think BTC can be seen as the modern gold :-)

As already mentioned, bitcoin and altoins (normally) will go in different directions - if BTC rises, Alts will remain low, and the opposite; if BTC would crash, Alts will go up again

This coin and the idea behind the project sounds very interesting - I`m quite sure that it has the potential to be successfull; I also hold some Eltcoin