In-house M&A, good early career move or lazy way out?

Hi there, I am working as a analyst in the Private Equity division of a major global financial institution, as part of a one year graduate program. I recently finished my masters in Finance at a prestigious EU business school and am writing my CFA Level II in August. 

Long story short (and old news) the job  market is rough and I haven't had a ton of interviews (womp womp). I am finding it really difficult to get a job straight into private equity (ideal would be as a PE Junior analyst). My colleagues have recommended that I need at least three good years of M&A experience to break into PE. 

I have been offered an analyst position at a very large, multisector (5+ sectors), global company that operates on each continent. It is an in-house position but the company makes 30+ acquisitions annually. 

Is this the easy way out? would I get more experience at a big 4 M&A team or at an Investment Bank? I know people usually exit out into corporate/in-house M&A when they want to retire from IB. Will my skills be seen as too specialised and less than if I worked for a consultancy firm or a bank?  

All advice appreciated : ,)