Yea, I'll be wearing my mountaineering boots which are pretty good for approach and are flexible enough to allow me to smear to the rock if need be. They have pretty good grip. Any chance you were able to get a view of the rappel station during June and see if I can trust it to rappel? I don't know how old is "too old" but I'm assuming its been up there for a while now.
Do NOT trust a fixed rappel anchor based on pictures posted online. Learn about anchors, how to build them and how to test them onsite. Also, keep in mind that Sierra class IV routes can easily turn into class V. The possibility of getting off route is non trivial even on well established lines and when that happens you can find yourself on a completely different, often very sketchy, terrain. There is nothing wrong about soliciting beta on public forums but no beta can replace a seasoned mentor. Find one and go on many trips with them - you will learn a ton and, ultimately, will become a safer climber.
