You won't have any problems with your size or finding a spot mid week since school is back in session. I like gerle Creek its quiet up there but mid week this time of year I doubt you'll have neighbors close to your site at any of the campgrounds.
Here is more info on all the campgrounds. There are pdf maps that show the sites.
St tires may be cheaper but st tire markers recommend replacing them after only 3 years. Lt tires can go twice that long so I would argue you pay more for st tires over the life of your rv. Oh and lt tires are superior...review the dot testing requirements. I think of st tires like demo batteries that come in toys. Just enough to get you to buy them.
Wild plum usfs campground in the Gold Lakes Basin area near Sierra City, Ca. Small campground that will likely fill up on the weekend but shouldn't be too bad. We go every year for the 4th. Nearby Downeiville has a great small town 4th parade and festival . They close highway 49 and the parade goes one way then turns around and goes by the other way.
I don't see the issue with ca and double towing. Go to dmv and take the written test and take a driving test with your fifth wheel or trailer to get a class a license with doubles endorsement. My brother in law got one and tows a boat behind his travel trailer. Sounds like you just need to practice parallel parking your trailer.
At Siskiyou there are 2 rv loops and personally I like the one that is farther away from the lake. It has private sites like a real campground and not a rv park. The lower one is a large gravel area with sites around the outside but no real privacy between the sites. jmho.
I think people need to read the thread on testing requirements by the dot. St testing is less stringent. St are simply updated as our tire engineers stated due to their "occasional non passenger usage." And they are designed for local service. So if you don't tow much or far than st might work for you.
OMG! ....Lots of hysteria about ST tires...FWIW ... been running ST tires pertnear 40 years and so far not single blow out. Have had 2 tires torn up becuz of fender support failures but nary a Kapow. :C
How many years have st tires been around?
7,500 lb fiver
2000 f250 with 5.4 l v8 <9 towing and usually 10-14 empty.
2010 gmc with duramax 11-12 towing and 14-20 empty.
So towing mileage will be about 50% better and diesel is cheaper than gas again but who knows if that will last. But i don't think it is really a apples to apples comparison...the power of the diesel is amazing and i would have to slow down to compare my mileage.