Hi y'all. First post on this very interesting forum. I usually hang out on PPRUNE.com, but my heart lies in taildragger backcountry stuff, and I just dicovered this site recently. I feel like I've just come home

I live in New Zealand, where I do some great wilderness flying in my Harmon Rocket, Citabria, and Spezio Tuholer - but I have an FAA license too, and fly a lot in the US. The only little (!) problem with NZ flying is that most of the country is National Parks, and it's illegal to land ANYWHERE that is publically owned, except below the high tide mark on the beach. I'm coming over to the US later this month to do some flying with a friend of mine, in his Spezio Tuholer. (Spezio is a 135 hp taildragger that has OK short-field performance - she's no Supercub, but I've operated my own Spezio at MAUW in and out of 900 feet, no problems.) My SFO-based friend and I are putting together an itinerary for a week long trip, looking for interesting airstrips between SFO & Vancouver, with a big detour into Utah, Idaho, possibly Montana, and so on. We're looking for challenging strips, and, for context, I'm a newbie on this site, but have enough experience to not kill myself on short and rough stuff, so if you recommend any tough strips, I promise you won't be reading about me and my friend in the Darwin Awards

I have searched the FAQs & the site, cos I'm sure this has been covered, but can't find anything, so I apologise if my questions have, indeed, been covered ad nauseam:
1. Anyone have any specific recommendations for interesting places to land?
2. Where could I find a concise list of the backcountry airstrips & areas of the US's Northwest & Western states?
3. Any idea how you know exactly where it is legal to land, and where it is not? Are there any simple rules?
(For instance, I have seen a lot of talk of landing on river banks, landing on roads, and so on, on this site. I'm jealous - it would ALL be illegal in NZ. Any pointers on where to start figuring out what's legal and what's not? (eg, USFS land IS OK to land on (?), US National Parks are not (?), BLM? I get the impression Idaho is perhaps more aviation-friendly than other states (?) etc) It's muc easier in NZ - it's ALL illegal, unless it's private land and you have the permission of the landowner. And even then it's 50:50 that it's illegal cos of zoning laws.
Any pointers on where to start looking, to plan this trip? Thanks in advance....