Another option would be to run them to the battery through a relay, and connect the relay solenoid to a switched +12V source. That way you won't increase the current load (significantly) on the switched +12V source. (switched +12V source like headlights may not have enough margin in current...
I haven't used 80, but the description says it's for rubber & vinyl. Since you're using fabric it's probably not what you want.
Super 77 is very common, and in the US it's available in most auto parts stores.
I would not spend extra on a K&N. Get an OEM replacement (or equivalent). OEMs design the factory air filter to flow as much as is needed. A K&N might flow more, but if the OEM isn't a restriction then it's not going to matter.
Depends on the state. I got licensed in CA, and there you don't have to take a class. If you do take the MSF class and pass the test, you get a waiver for the riding test at the DMV (which is just riding around a figure 8 anyway). Classes and lessons are not mandatory though.
If you like to ski, Mt Rose is a good option if you live in Reno. It's close and doesn't get as crowded as some spots in Tahoe, and it's got some good terrain too.
Upvote from a Reno native! :)