[I am more in favor of regular deposits than aggressive deposits. I am more optimistic that you will make a profit by continuing to deposit Bitcoin although you mentioned the doubt about making a profit. The past history of Bitcoin shows that it has provided surprising profits for those who hold it.
Having a backup fund/cash flow allows an investor to follow the cycles regularly to fully implement their long-term plan. However, I think it is more important for new investors to set a strategy so that they can consistently accumulate any amount of Bitcoin. The timeline you mentioned for Bitcoin savings is at least 10 years, which may be a long time for a depositor, but I would encourage extending the time because it provides the investor with a guaranteed source of income/employment until retirement.
The more you ask a new investor to deposit Bitcoin and mention the benefits, the more greed will be created in that investor. Later, he may give up his investment, that is why I say that depositing Bitcoin is the best and it is natural to be profitable if you deposit it in a long-term manner. Therefore, in the beginning, the investor should not be shown the greed of benefits, it is most appropriate to advise how an investor will hold Bitcoin in a long-term manner.
Because first, holding and then reminding him of the strategies on how to sustain his investment for a long time, Bitcoin is not 10 years and more, the more his investment will be successful in the long term. The patience of investment is the only main tool to reach the peak of success.