Kevin,
Great result for a first time run. The bike is looking great.
Other weight savings in no particular order:
Frame - It's very heavy. Contact Randy Illg at framecrafters.net for a light chrome moly frame
Swingarm: Incredibly heavy and not much use. Randy can make you a replacement at a reasonable price.
Starter clutch: can be reduced considerably as long as you aren't using the stock starter that is!
Starter motor, wiring and solenoid.
Front Disk: get a modern disk with aluminum carrier and almost any twin piston, sliding type caliper say SV650 or EX500. You will have great brakes that weigh very little.
Rear wheel: That one is probably very heavy. Spoked stock type wheel with fat rim would look great but isn't as light as a modern wheel. If you can use modern wheels in that class, I'd go with say GS500 or katana rear wheel.
Wheels (Both): Replace teh bearing spacer tubes with aluminum ones but make then .020" longer to allow for crush.
Axles: replace with Titanium if money is no object or get them drilled through from one end to the other. That goes for the swingarm spindle too.
That battery is a good start. We use small batteries on our road race bike and connect them with simple two pin connectors. After a run, pull the plug and plug in the charger using a matching 2 pin plug.
A single charge should last all day, but this way you are always sure that you have a full charge.
Forks: Billet triples could be lighter than stock and use an aluminum fork stem. It seems to me that stock forks are very heavy (thick walls) and a later model bike may have lighter forks - look at a GS500 for example- or even a 250 street bike or cut down a set of 125 motocross forks.
Crank: That could be lighter, but this is getting out of hand
needing to lean out the carbs.
