Advice for 2nd year MBA looking for mid and late stage VC roles (series B-D strike zone)

Hi guys,

I'm a second year MBA looking for late stage venture roles with a background in growth buyouts. I got to know about half of the firms I'd like to work at last year. I recently reached out to the one I know best to ask if they are hiring for post-MBA and they said they're not hiring. This is both N of 1 and also indicative of the broader growth market. I'm wondering a few things (all opinions welcome, both junior and senior, just need a sparring partner).
 

1) Should I bite the bullet and go back to blue chip PE to take the "risk-off" approach to post-MBA hiring?

2) Should I grit it out and expect to be successful by using the next 6-7 months to be laser focused?

3) For firms I have built a relationship with, when should I ask? Now, and then before graduation? Or wait?

4) When is the right time to reach out for firms I have not built a relationship with, since at this point it is a cold email with my resume?

I am as competitive as anyone for these roles, if not more than most, so with enough shots on goal I know I can convert. The issue is the macroeconomic environment, uncertainty, and risk strategy. 

Thank you!