I'm working on a project and I'm raising about $ 100k from some friends and angels(some are based in US)

I'm a european citizen and some investors want that I move to silicon valley(and I'm ok with that), but how can I legally do ? what visa options do I have ?

I've heard of E-2 Visa[1] but I don't have any money in cash that I can invest into my business.

I know that i should hear a lawyer but I want first understand what my options are(and if I can use my startup IP as asset)

How do you have done ?

Thank you.

[1] https://en.wikipedia.org/wiki/E-2_visa