At 8 lb/gal, optimizing your fuel fill is the best bet.
After that, make sure your seat doesn't get water-logged when you wash the bike.
The fork springs on these bikes are known to be oversized and very heavy. Putting in an older style spring with a spacer can drop a lb maybe.
Suzuki's are about the best cornering and most nimble feeling bikes, and they're also some of the heaviest. Focus on setup and geometry. A 240 lb bike versus a 245 lb bike will not get you to the finish line any faster, only to the bottom of your bank account faster.
Oh, and yeah, the KTM's do vibrate like crazy. Didn't realize it until I rode one back to back with my YZF. The difference is nuts.