I’ve been thinking along similar lines - although I’m still working. With all the free weekends I have thanks to my local SCCA region either cancelling or postponing club racing events, I could get to work on building my next model railroad (I model in N scale, btw).
Bought a GP9 locomotive on eBay a couple weeks ago, and now I’m waiting for some Unitrack I bought off Amazon to arrive. In retrospect I should have ordered that from a US-based online retailer. The three different items I ordered all came from different Amazon sellers, and two of them are in Japan.
Autocross, rallycross, rally sprint, stage rally or hill climbs?
Sounds like fun. I wouldn’t worry about the stuff from Japan, they’ve got things pretty well under control there.
As for the geep, sounds nice. Hope you got an Atlas or Kato. For N scale, I think I’m happiest with my Kato locos. They make good stuff, especially the 2-8-2’s.