I would like to start from $50,000 now because i have already some of the bitcoin and this is not bad to wait for the future i want to start from this amount for now and if i have some more money in the future i will invest in some altcoin as well but i want to start from this little amount So it may clear to me about the profit and other volatility of this currency.
For me, this option is even worse than choosing 50 dollars first to make the investment. The newbie must not risk with the huge sums of money until he feels he knows almost everything about the market of the cryptocurrency.
According to me it totally depend on your condition and your experience also. I will suggest you if you have experience in investing then its good to start from some average level investing with time you can improve your investing while if you are high qualified experienced then you can start by investing huge amount like 50k$ as mate mentioned that will give you profit more while if you are fresh then i will suggest you to start with some low amount then with time as you are getting experience then increased your investing with time.