You are a believer in the latest technology, the blockchain.
It dosen't matter at what price you have invested.
As long as you have the patience and strength to NOT touch your assets!
If you are confident in trading then go ahead and do so. I am following the long term investment strategie and only trade in high volatile times with a max of 30% of my investment.
Invest what you can afford to lose, let it sit and wait. If you have about one full BTC you most likely won't have to worry about money for your retirement. Since after calculations the prediction for the year 2020 lies at about 1 million dollars per Bitcoin. There are many variables like the evolution of the miners but it is rather unlikely that there will be a big change in the efficiency in the ASIC or FPGA segment. The biggest issue for me is the evolution of quantum computing, but there is risk in everything. I don't think that quantum computing will be used to calculate the blockchain tasks in the next 5-10 years.
That said, most coins are evolving away from proof of work (mining via hardware) to proof of stake (wallets with big amounts of coins verify the transactions)
So the impact of any new mining technology won't affect for example: Ethereum and Ripple / XRP /

Since we're going through the same consolidation pattern as 2013, it is possible that BTC is falling to about 3500$ although i don't really think that it will. I rather think that BTC will be at about 40k$ at the end of 2018.

The big banks are in the biggest dept ever and there is no reduction in sight. One of the worlds biggest banks in Europe, Deutsche Bank is at the edge of breaking down due to dept. There is a funny fact that media gets right.

THE BUBBLE WILL POP!

But they think that the bubble is BTC, i think the bubble is your everyday Dollar and Euro. Inflation will roll over you starting this year.

When it happens, people with a lot of money will panic ant try to save their money by buying into Bitcoin. This leads to a new skyrocketing in price in 2018.

Get your buns while they're hot.

This is no investment advice, this is my personal opinion.
If you want to invest bigger amounts, never trust any media.
Make your own research, get to understand the technology or gamble.