Moving to the Buyside - Key Considerations

Hi all,

I've just received an offer to move into what I think is a hybrid buyside role from equity brokerage side, and want to understand a few things before I make a decision.

The firm itself is a smaller perhaps mid-market shop that invests, operate and develop but ALSO provide advice to its clients on business strategies, asset management etc. It started off as advisory and transitioned into AM and Acq. often co-investing with its clients if they like the deals etc. also across the capital stack

Opportunistic and value add core+ sector and geography agnostic (although will realistically be European).

They say that they do both the acq. and advisory mandates which makes for a nice hedge in the downturn.

What are some key things I should think about here? I've never done buyside investment work before, they recognise this and so will need to learn a lot and get to grips with thinking like an investor.

Also what would this kind of firm even be 'categorised as'?