Austin is a great place to do this type of homerun attempt without experience. There are some nice start up jobs there, and the costs are way lower. I went from Austin - > sf and while I'm still in the career-building phase here in sf, it's not so desperate that I am living in a closet. So I was lucky that I came from Austin first with some experience already. But this is a really bad city to build something out of nothing. The costs are stupid, even when you see a rent like "only $1,200 a month!" it's likely that the deposit is ridiculous too. The transportation is great, but it depends on where you are in the city. I luckily get on the bus at the start of its route so I always get a seat, but if I was a few blocks down when the bus was already packed like sardines, I'd hate it.

Train is the same. You have to go out so far to be comfortable that your commute goes into the hours mark. SV is just insane for someone that doesn't already have an established career. I know I would have burned out already if I didn't have the experience from Austin already.