The most important thing is to start consistently, not the amount of Bitcoin. To start any investment, you should first have money, sufficient knowledge, or absolutely perfect market conditions.
You don't need to understand everything about Bitcoin before you invest in Bitcoin, and you don't need to start your investment in absolutely perfect market conditions because Bitcoin is highly volatile, and you don't know when the market will be favourable for you to start your Bitcoin investment. If you have a source of income that guarantees you discretionary income, you can adopt the DCA strategy and start your bitcoin investment weekly or monthly based on the one that is convenient for you, and you need to set aside your backup funds or emergency funds. In case you have any emergency you didn't plan for, you can depend on your backup funds or emergency funds to solve your emergency, and it will not influence you to sell your bitcoin.
The only time we can say there is an absolutely perfect market condition is when there is Dip else there is nothing of such especially for an Investor because their target is always long term investment and so using the word absolutely perfect market condition seems like a trading term because as an investor you don't really need this because the dollar cost averaging is always there to buy at any time regardless of the market condition. And don't complicate or mistake back up funds to emergency funds because they both have different task even though they are both used to solve problems but the problems they solve differs.
The most important thing in investing is to start investing consistently, regularly and in a planned manner. You should not start Bitcoin until you know everything, it can be an unnecessary obstacle. It is better to start investing with some basic knowledge. Perfect market conditions are applicable for trading, it is not reasonable or necessary to wait until perfect market conditions for investing. Investing requires not only money or strategy, but also mental preparation. Because investing requires mental capacity to withstand market fluctuations. It is necessary to maintain consistency in investing, but you should also pay attention to the amount of investment and its consistency. It is not right to put yourself at financial risk. Investing in the DCA method helps you reduce average costs and reduces the impact of market fluctuations.
It so clear from how you structured your point that you’re coming from more of a trader's perspective, even though you are mentioning DCA. That’s exactly where the confusion starts.
Trading and DCA are two completely different approaches, and they should not be mixed or compared as if they are the same thing. Trading is based on timing, trying to predict market movements, buying low and selling high, which is extremely difficult, even for professionals. While, DCA is purely an investment strategy. It is built around the idea of buying regardless of market conditions, not trying to guess them. That’s the whole strength of DCA, it removes that need for perfect timing, which you yourself admit is unrealistic...
So saying things like “perfect market conditions apply to trading” while promoting DCA in the same time is contradictory. If you truly believe in DCA, then you would also agree that waiting for certain conditions before investing makes no sense. You just invest. Consistently.. No need to overcomplicate it with timing logic...
And yes, mental preparation is part of it, I agree with that. But the best way to build that strength is through action, not waiting until you are perfectly ready.
I'm personally quite confused by all these assumptions, because essentially, when you invest in Bitcoin, you only need discretionary funds and access to an exchange to buy Bitcoin. Once you've accumulated enough, you can transfer it to a non-custodial wallet for greater security. So, there's no need to overcomplicate things. While it's true that knowledge is crucial in investing, I don't think investing in Bitcoin requires a high level of knowledge at first. Basically, there's not much to learn when investing in Bitcoin. The most important thing is having income and discretionary income to invest. Unless you're going to be a Bitcoin miner, that will undoubtedly require extensive learning. But if you simply want to invest in Bitcoin, you don't need to learn much about it. Your only goal is to buy and hold it long-term.