HELP! Top BB IB(NYC)-->Non-profit-->BlackRock/???

What the title says. Went to a top 3 STEM target with a 3.8+ GPA, did 2 years at a top BB IB (NYC), then did something quirky and went to a non-profit for 2 years to take a break/boost my MBA profile. Unsatisfied with MBA results, but I got into Oxford masters in something STEM related as a hedge.

My non-profit contract ends on September 15th. So I started shopping around for buyside roles and landed one with BlackRock. But If I pursue this, I think I might be settling because when I was at BB I had MFs reaching out to me, which does not happen anymore. I don't know exactly which area of investing I want to do -- I just like analyzing companies and writing investment memos (have experience in M&A/debt). My focus is to go to a brand name shop that will open doors back up to me.

Options:

1. Settle with BlackRock (I think I'm too good for them).

2. Just go to Oxford to rebrand and recruit from there (slightly worried that I'm passing up a once-in-a-lifetime opportunity if I don't go). Do 2 years at the buyside role and reapply to b-school.

3. Say no to BlackRock and Oxford and risk being unemployed for a couple of months -- and try to land something better than BlackRock.

PLEASE HELP!