Yes, it is right if you have a proper understanding of the market and a proper understanding of technical analysis and fundamental analysis and if you have the ability to examine the market properly, then you can take a decision by examining the market properly. I don't think investing in bitcoin will be risky for you, I think it is the best currency for you for a long-term investment which is very easy and you can continue to invest without risk.
Bitcoin long term investment doesn't need all that you mentioned.You don't need to understand anything about technical analysis or fundamental analysis because you are not a trader but a long term investor who is only buying and hodli overtime.
A new investor only needs the basic knowledge of bitcoin and his discretionary income to get started with his bitcoin investment. It's better for you to use DCA method to accumulated bitcoin because you are only to be buying weekly or monthly when your discretionary income is ready. DCA is an efficient and effective way for constant growth of portfolio overtime as long as you are consistent and persistent with your bitcoin purchase for 4-10 years and above.
Bitcoin investment is not 100% risk free which is why you must have a proper plan on setting up several backup funds to tackle any unforeseen emergencies during your bitcoin accumulation journey and also invest with only the amount of money that you can afford to lose.