Regarding insurance, the only way we can get it is through the CA Fair Plan, and it’s steep.

The best option would likely be a construction loan, which can cover both the purchase of the land and the build.

How does their "generous liability insurance and requiring renters insurance" specifically benefit owners?

One of the main issues is insurance companies NOT insuring many of these areas.

Any other good platforms to post ads or insurance relocation etc websites?

Steadily is an MGA and they also act as an insurance agency.  

Once we identify a location that meets our criteria, we network with builders, property managers, lenders, insurance companies, CPA's, attorney's, etc. that service that area to have the entire team already established you need to be a successful investor regardless of your physical location or experience level.

@Voley Martin Make sure you get updated insurance costs.

Talk to your insurance provider about your concerns and they can recommend the right coverage.

Or should I invest regardless of student loans if my hope is to use FHA loan for smaller downpayment and then eventually rent the house out in a few years once I move?