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

The question is, why do they want you to move? Do you really have to? If so, you'll probably have to change your strategy.

If the investors want you to move so much, get them to foot your extra expenses, or at the very least your rental bills (so, additional funding). Otherwise you'll burn through your runway way too quickly.

I do think the runway analogy is a very apt one. Except that, in Silicon Valley, the runway is made out of acid.