Meeting Principal from PE Megafund - Advice

Hi,

I'm a London based first year analyst at top BB name (GS/MS/JPM) in a coverage role meeting a principal from a PE megafund (say, KKR/Apollo/CVC/BX) through a personal connection - we both come from the same small country so that was made it happen. It's just for a coffee, but of course I want to take full advantage of the situation.

Any suggestions how I should approach the conversation? Very keen, obviously, to use it as a bridge to a recruiting process with them. 

Best