Vogar to Krysuvik and back - one day trail?

I am planning to start early in the morning in Vogar, walk to Krysuvik area, spent some time around and go back to Vogar. Want to go by foot to enjoy the most of great Icelandic nature. Whole day trip. I am used to walk a lot even with heavy backpack.

Doable or crazy in this time of year?

Love to hear any ideas about my plan, suggestions etc.

And yes, I am planning to take with me food and water and also respect nature as much as is possible 🙂