Inspect the underside (and inside) of the fuel tank for rust.
The SP1's are known for rusting/weeping around the lower mounting point. You say you have a 2002, but it might (not saying it is) be a 2001 first registered in 2002?
US RC51's reg and vin are always the same year. Don't need to worry about that.
I'd recommend buying a couple spare relays, since the originals are prone to failure after this long. I'm talking about the High Beam relay, Fan relay, Fuel-cut relay, Bank angle relay - they're all the same.
If you look as closely as you can with a flashlight into your gas tank, and it's spotless, don't' worry about the fuel filter just yet. It's a fairly involved task. As long as the bike seems to run good, that is.
fpr is an easy change, good you're on that.
As you mentioned, checking stator's AC output and reg/rec DC output is a good idea. Check those connectors for heat issues. Common for them to get burnt.
Oh yeah, you're right on: AC = California Bikes only. Parts don't' cost more. It's just that there's more emissions parts on AC bikes that aren't needed on A bikes.
Svc. Man. calls for valve clearance check at 16K mile intervals.
That would be a good time to remove the gas tank and do that fuel filter change, since removing the tank makes valve work much easier, and you have to remove the fuel pump flange on bottom of tank to get to the filter.
Added a pic of my last valve clearance check. Rear cylinder. Front of bike is on left side of pic, and you can see the fuel pressure regulator too. Having the tank off made a world of difference for access.