No problem!!!
It was a total of 7 hours from the turn off at Roberson to Jarbridge. I broke it into 2 days and camped the first night just outside of Murphy Hot Springs. (I always get a later start pulling out of my driveway than I plan to.) There are free sites right along the Jarbridge river.
In Jarbridge itself, there is an RV park in case you need to dump tanks, charge batteries, or take on more water.
I found a spot outside of town at Pine Creek Campground. The trailer fit fine. I got a little creative parking the truck. Your trailer is smaller than mine - you'll find more spots you can fit in. It's a developed FS campground, but I had it all to myself.
The road itself was mild washboard in spots, but was in good shape. I probably could have gone faster, but I didn't want to wreck anything.
I fished. I even caught a trout big enough to eat! (I'm lousy at fishing, but I still like it) I did a long day hike to Jarbridge Lake (I didn't do the extra miles to Emerald lake - that's backpacking territory for me). And another hike around the rock hoodoos on the other side of Jarbridge. It's a great area.
