Investing this amount requires greater care. You must choose an investment with a good risk/reward ratio, and with good fundamentals behind it.
In my opinion, the level of risk to hold Bitcoin, at this point, is an acceptable level. In addition, the profit potential, for the long term, is high compared to other investments.
You might be right but the final decision will always be coming from the the OP, he will invest a big amount so needs to carefully study on the possibilities. As once it failed, money gone and you might lose your appetite about bitcoin. We know there's a good future but do not be too confident to put all your money.