Considering this all to be truthful, it seems you have fallen for the startup mythology - I know because I have been there too.

Maybe you can make it work, who knows, but the chances are slim - even more because of your nationality.

Don't all-in in this, protect yourself and your family.

Don't believe those hard-working startup stories, most of them in reality are really luck or contacts, nothing to do with hardwork, quality, strategy, etc. And there's people profiteering over believers like you...

I won't even comment on the irony of an iranian citizen asking for help from the Silicon Valley - when did these people help you or your country, ever????????

Best of luck