6.5 Day Possible Itinerary (Golden Circle, South Coast, Vestrahorn?, Westman Islands)

My daughter made the following itinerary (it is simplified) but I am worried it is too much. Thoughts? Are we missing any must sees/must dos (ex Snæfellsnes)? Any and all input greatly appreciated!

Day 1, 6/17: Arrival and Reykjavik

Hotel 17-18: Reykjavik

Land at 9:25am in KEF

National Day yay!

Day 2, 6/18: Golden Circle

Hotel 18-19: near Seljalandsfoss

Silfra and Snorkling (8:30am)

Þingvellir National Park

Brúarfoss

Geysir / Strokkur

Gullfoss

Kerið Crater

Day 3, 6/19: South Coast

Hotel 19-20: Vík

Seljalandsfoss

Gljúfrabúi

Skógafoss

KVERNUFOSS?

Reynisfjara?

Horse Riding (5:00 PM)

Day 4, 6/20: Glacier Lagoon Region

Hotel 20-21: Jökulsárlón Area

Drive East

FJAÐRÁRGLJÚFUR?

Jökulsárlón Glacier Lagoon

Ice Exploration Tour (1:45 PM)

Diamond Beach

Optional: Vestrahorn (midnight sun)

Day 5, 6/21: WESTMAN TRANSFER DAY

Hotel 21-22: Westman Islands

FJAÐRÁRGLJÚFUR?

Drive to Westman Island Ferry

Take ferry at 3:45pm, 6:15pm or 8:45pm

Day 6, 6/22: Westman Islands:

Hotel 22-23: Reykjavik (Possibly Hvammsvík Hot Springs Resort bc not that much further)

Beluga Whale Sanctuary (10am-4pm)

Puffin & Volcano Tour (2:30 PM)

Stórhöfði Puffin Cliffs-

Ferry back at 5pm or 7:30pm

Drive to Reykjavik (or Hvammsvík Hot Springs)

Day 7, 6/23: Last Day

Flight at 4:10pm from KEF, do we have time for anything else?

Hvammsvík Hot Springs? (10am-10pm) (1 hour from reyk, 2 hours from Landeyjahöfn)