3yrs Garaged Boxster. How to prep it for driving?

[davemon]

So my '04 986 has been garaged for about 3 years. I asked someone to start it and give it some revs on occasion, but I am not confident in how much time or love the car has gotten since I'd left it 3 years ago. I can assume something near the worst, which is that it only got moving down the road a few times.

What should I do to get it road ready again? I am primarily concerned with the oil and engine. It has the Porsche IMS retrofit, ie the oversized IMS.

Should I try to get the car on jacks and change the oil before turning the key over? I'm guessing the tires should need replaced, recently heard something about the rubber getting stiffer with age.

What else should I consider or think about?

Thank you for the input!