Glad to hear you're gonna keep her. Is there gonna be another yellow SVX running around?
As for painting Pearl is quite tough to match. A total repaint will be the best option I'd suspect.
OEM parts should come with primer on them I'd image though I've never bought any Subaru body parts.
If I can help at all let me know in your search.
Hopefully I'll see ya in Winchester on the 16th provided my cycle makes it down to the campsite in New Market friday and restarts Sunday am.