The plug options are:
NGK IFR 5L-11 or BKR 5l-11
I prefer the Bosch. I tried the NGKs, and they fouled within 3000 miles. I've got about 8000 on the Bosch plugs with no issues.
Holds 3.9 qts of synthetic 10w-40 oil, just pour in 4 and call it good. My personal preference for oil filter is Bosch 3300.
The "map" is the term used to describe the settings in any fuel injection system. It determines how rich or lean the system makes the bike run.
Sounds like you got a great find, and have an awesome wife. The problem that you may run into is that your bike hasn't been ridden, therefore it most likely hasn't had regular maintenance. That's the problem I had with my low mileage 02 model when I bought it. I would suggest a full fluid change, check the shock bushings for wear, remove the rear wheel and lube the drive splines with moly grease, check the brake pads, inspect the wheel bearings, etc. If you're up to the task, I would highly recommend installing progressive fork springs as your first mod and changing the fork oil.
Great how-to write ups for everything I listed above can be found at www.tech.bareasschoppers.com