you'll wear out and dry out the bushings on your suspension if you leave it decompressed. (particularly in the rear). No reason to jack it up, leave it on the wheels, if you have storage wheels you're set.
rags in tailpipe, air filter, etc is for mice.
also throw some baking soda in the cabin and trunk to keep things dry and prevent mold
I run a canadian led kit & hid kit company, if you have any questions about led headlights or hid kits in canada or would like to check out our products please contact me here: http://absolutehid.ca
Hot: 2001 Estoril M RoadsterZCP 19's michelin supersports, ZHP knob, JL 8W3
Cold: 2002 TiAg M3 6mt
deoranged, dechromed, led tails, ZHP knob, UUC SS v3, GROM, OEM 18's w310's,
Fun: 2006 YZF-R6, black, ohlins, pazzo, cat delete, vance hines csone, YEC racing tune