PM at small HF having difficulty moving up to larger firms

Hey guys,

I'm 35yo, currently a PM at a very small hedge fund (< $50M) running a systematic strategy. But because of our small size all it takes is for one of our big clients to leave the fund for us to be in financial trouble. 

I have a Bachelors in Economics from a non-target school, started as an intern for a market making firm, left to start my own family and friends CTA fund which I ran for 4 years, got hired by a $300M equity HF where I first co-managed the portfolio with the owner and eventually managed a $100M book with my own strategies. I then left to join the current fund I'm at because they offered me a larger share of the PnL and eventually a small % of the business, so I'm currently running a systematic macro strategy with I've developed over the years. 

I started as a technical trader, then added fundamental and then thought myself how to code and started trading quantamental strategies. 

I have a decent 4 year track record with a 1.9 sharpe, 13% CAGR, -5.57% max DD.

I'm trying to join a larger more stable and established multi-strategy hedge fund but I've been having trouble getting any interviews even though I think my track record is pretty good. 

At this point I think I lack the educational and work history pedigree of having a top-school Masters/MBA and having the work experience at a bulge bracket firm. 

Should I just go get a Masters or MBA to increase my chances at becoming a PM for a top hedge fund? Or should I take a few steps back and try to join a bulge bracket firm to put a few years of that on my resume? Maybe both?

Thank you.