Are you talking about San Diego State University, or University of San Diego? SDSU is a great university and a really good choice for a CA resident. USD is a good school too, especially if it’s less expensive/more affordable.
If your dad can afford $100K across four years, that’s $25K per year. Most states have a public university where the total cost of attendance for state residents is less than $30K a year; if your dad is willing to kick in $25K and you take out federal loans and maybe work a bit or get some work-study, you can afford a great public university in your state. Another option is to go to community college for a year or two, and then transfer into your state’s public university for the last 2-3 years. What state do you live in, OP?
Or you can take a gap year and try again with some universities that might give you some financial aid.
I don’t think you’re understanding the issue here, though - you won’t be able to repay those loans. It doesn’t matter what kind of investing and trading you get into; it’s exceedingly unlikely that a brand new college grad will make the kind of $$$ necessary to repay $150K of loans. And even successful entrepreneurial ventures take years to make money if they ever do. Do you know that most Silicon Valley startups crash and burn within a few years? Only some are moderately successful, and only a few turn into the Facebook, Snapchats and Ubers of the world.
Private loans do not have the stopgaps that public loans do - there’s no loan forgivenness, no automatic forbearance or deferment, little relief. When you are unable to repay - because if you borrow $150K for school, that’s what’s going to happen - you will ruin both your father’s credit and your own. You’ll be unable to live independently. You won’t be able to buy a house or a car or rent your own apartment. If you do a search you’ll find lots of stories of students who borrowed a lot of money to go to expensive schools such as these and ended up in a bad place financially later.
$230K over 5 years is about $46K per year. UMiami’s cost of attendance is about $63K a year, so I can see how he amassed those loans - maybe he got a grant for $17K or maybe his parents could only pay $17K and he financed the rest, thinking he was going to make the big bucks as an engineer and could pay it back. Except that he ended up spending 5 years in school.
Even well-paid engineers only make about $50-65K on average coming out of school with their bachelors degree - college students hear about the ridiculous salaries paid to software developers at Google and Microsoft et al., but only a very small fraction of engineering and CS majors get hired there! And even then they still don’t make enough money to repay $150K in debt, let alone $230K. (Google pays its software developers about $128K on average base salary, which is still less than that debt, and they are one of the highest-paying companies in the world.