Gents
I bought some new wheels last Friday, and the front one at least has arrived!

(Shimano Dura Ace 7900 C24 CLs, since you ask)
Noob questions as its the first new wheels I have bought...
Do I need to DO anything to them to prep them for use? (oil / grease hubs / check spoke tension - how?!) etc?
Should I keep the plastic hub plugs that came with the wheel? They'll live in the wheel bag when not in use
Does the QR skewer need greasing at all?
Also, for when the back arrives, what tools do I need to get a new cassette on? (am thinking Shimano Ultegra 11-25 probably, have a 12-25 on current wheels)
All comments / suggestions gratefully received!
Thanks