Nice looking bike. The electrical was an issue on these bikes. Before you start tossing money at it though. Check what the volts are. Get the bike running and rev to 3000 rpm and check voltage. You should charge around 14 volts, slightly under.
In the shop manual here, it should describe how to test the system. It could even be something as simple as a bad connector.
Sorry I missed the previous post.
Uni pods or K&N pods might help. Of use the airbox with a Uni or K&N filter.
The ride IS the adventure. The destination is just to get gas!