The boy is the only child of the widower and does not seem to be interested in the same line of business and even when he does, he requires more maturity to be able to manage the business such as graduating from the college, etc.
Maturity is the important thing here. So at such age he is probably not so clear with what he wants and how to go about it. There are different life's challenges that he is not use to and probably he would still be on the tetulage of his uncle and aunties and that makes whatever advise that would be given to be neither here nor there as he would be trusting on them and either they are already his trustees.
But if I would say depending on how mature he is, if he is more into crypto, he could buy portion of bitcoin for this season to run with the bull and taste himself on his capacity to invest then after he would cash out at the end of the bull.
I would advise leaving alot of money in the bank but to use some to invest in estate business. He can only go wrong with buying of land and properties if he went through wrong hand and get scammed all of his money. In other words, he should invest in land gradually in other not to be defrauded a whole sum of money , so as time goes on he can accumulate some more properties. The reason that he won't go wrong in buying of land is that such lands appreciate over time and then the lands become much more valued than when it was bought. In whole, he has to be careful and mature with time into another business area if he doesn't want to follow the line of business of his father. Wealth is created over time, you gradually build on your interest of business.