Welcome new X5 owner here (3.0)
Well. 3.0 is because I also own 540 and figured that my wife really don't need another V8

I did valley pan gasket along with leaking chain covers on my 540 about a month ago. I think I can do valley pan gasket in a few hours second time. Very easy.

Have mirror and picks available to unclip injector connectors.
Inspect intake gaskets (bottom) when installing intake.

Don't have to get parts from dealer. Worldpac retailers have same brand stuff for lot less. Like Autohaus AZ that I use (no affiliation)

New valley pan have different design, so you have to buy whole valley pan. Buy new plastic shield because you will brake old one.

Let me know if you have any questions on this job, will be glad to help