Just start investing only the money that you have. I certainly see your courage to invest but never put an excuse because you don't have money, I think you can find a way to do it. But I suggest not rushing, let's say you are late and missed the opportunity to buy Bitcoin at $35k, however, we have to remember that corrections may come again, you could wait for it if you want. Or, you invest in altcoins, they are also profitable like Bitcoin.
Please remember these things,
* invest only the money that you can afford to lose
* don't fall into an easy-money scheme
* focus on the top coins, not in new projects
Bitcoin is the only coin that he wants to invest. I bet he already knows that coins next to bitcoin are riskier but the first and second item in your list can matter to him. He wants more money to invest in btc.
I think he already have a money but it was small and he might think of using this money first to money doublers and other money making schemes. If he want more money to put in btc, that only shows that he is not investing what he can afford to lose. That is a bad initiative when it comes to investing and investing in btc has no exception to that rule. Btc can be safer than other cryptos but btc can fall sometimes and becomes very volatile. This together with the negative news can affect the decision of a btc investor.
If I may suggest, he should not put his money to btc only if it comes from his hard-earned savings.
As much as possible, diversify his portfolio not only in crypto, but he should at least have tangible assets like jewelry or real-estate, if possible.
Because if the crypto market gets worse, at least he has other assets to back up his financials.
But if it is only crypto, would be hard for him to recover if things go sideways in this market.