13 Day self drive Itinerary Oman - Feedback

I am visiting Oman and wanted a sanity check on my Itinerary and any recommendations for spots that I should visit that I don't have on the list, or if there is anything on my list that is not worth seeing. I will be hiring a 4x4 with a roof tent so plenty of camping. I think I've got most of it planned out, but not much room in for random stops and shopping at supermarkets. Also timings between destinations vary online depending on the source, so a little uncertain on that.

Thank you!

29th March - Arrive at Muscat.

30th March - Muscat attractions (Sultan Qaboos Mosque, National Museum, etc.)

31st March - Daminyat Islands half day tour with snorkelling, Mutrah Souk in evening.

1st April - Pick up car, pick up stocks. Dimmah Sinkhole then go to Fins Beach to camp.

2nd April - Head to Wadi Al Arbeieen spend time there then go to Wadi Tiwi to camp.

3rd April - Wadi Shab in the morning, drive to Ras al Jinz and spend the night in the turtle reserve.

4th April - Sunrise turtle viewing, then head to Sugar Dunes stock up on the way. Camp by the dunes to the south.

5th April - Leave Sugar Dunes and meet with guide at the south entrance of the Wahiba Sands. Drive through the desert and camp somewhere centrally.

6th April - Drive the remaining distance of the Wahiba sands, visit Wadi Bani Khaled on the way out. Spend the night in an airbnb near Jebel Akhder.

7th April - Explore Jebel Akhdar (villages hike). Grab car and head to Nizwa/Misfat to camp.

8th April - Explore Nizwa town and markets, quick stop at Jibreen Castle, then Camp at Wadi Shems (any good recommendation for camping sites?)

9th April - Jebel Schams balcony walk for sunrise then leave to Muscat. Take route through Bilad Sayt through wadi bani awf to arrive to Muscat.

10th April - Hand car over and relax at hotel and get laundry done.

11th April - Fly out.