here's a report I posted a few years ago
https://blog.regehr.org/archives/1832 that (iirc) comments a bit on trail quality. which was highly variable, definitely plan on doing some routefinding. also do a web search for "jarbidge" and "fretwater" -- that's a blog that has a couple of posts that also talk about trail quality. when I was there (midsummer) there was a lot of water around, my usual desert-style approach to water is to filter a lot of it at a time and that wasn't necessary, we basically just grabbed a liter or two using my friend's befree bottle every now and then -- saved on the carrying and also this meant we got cold water to drink.
and don't search for "jarbridge" it's "jarbidge"