I just came back from Sedona on Wednesday. Excited to try out my new D7100. I took hundreds shooting 'raw' -- I'll be working on these for quite awhile. I am strictly a hobbyist. A few thoughts:
Sadly, the West Fork trail will probably be closed. I was there the day before the fire. It was absolutely beautiful. I hope it was spared. If it by chance opens in two weeks -- go there. You'll follow a trail crossing the meandering creek. Lots of photo opportunities.
Of course, there's lots of roadside spots to take photos of the 'rocks'.
If you want the famous shot of Cathedral Rock reflecting in the water, go to Oak Creek Village on 179. Take School Road (it's at a roundabout) all the way to the last parking lot (Baldwin Trail). Towards the end School Road turns into a dirt road. Baldwin Trail is nice and it will take you by the creek as well as up and around Cathedral rock. But it will not take you by the reflecting pool. To go to the creek and reflecting pool, park in the parking lot and walk just down the road to the dead end. Follow the path along the creek until you see some rock outcrops by calm water (5-10 minutes). You will see Cathedral Rock reflecting in the pool. The water is low, maybe a bit too low for the best shots, but it was still spectacular. If you want to take Baldwin Trail, follow it until it forks at a Y and a sign. Stay to the left, i.e. do not go to the right (labeled "Cathedral rock"). A local told me to stay to the left because it goes down to the creek and later takes you up Cathedral Rock and around. It was a nice hike. This area is far away from the fire.
An excellent book to have is "Photographing the Southwest, Volume II, Arizona, 2nd edition -- by Laurent Martres. It has a section for Sedona. Very handy. Also check out the internet for info for the different trails you can take. Just Google 'Sedona Trails'.
I found that I used, almost exclusively, my 18-70. It's an older lens but I have to admit it took very nice photos. I bought my 55-200 VR but used it very little. Most of my shots were from 18-55mm, and at 70. Your lenses in that range should do nicely. 18mm was used mostly for wide angle shots with my point of interest in the foreground. A wider lens might have been nice to have, but I can't say not having one.
Have fun.