Did you change the oil before putting it into storage?
If you did, I would leave it in storage, unless you have time to drive it and put it back into storage properly. Idling is worse than leaving it off, you need to drive it to normal operating temps for 20-30 minutes.
If you didn't, I would definitely do an oil change now and put it back into storage.
Here is a fantastic guide to taking the 986 out of storage, and how to get things circulating before you start it up for the first time:
Time to Wake Up...
For the suspension, it couldn't hurt to roll the car onto a new section of tire, but you don't want to leave the suspension "unsprung."