Honeymoon in Egypt, skip Luxor?

I'm currently deep into preparing our honeymoon in October.

So far I'm set on starting in Cairo (2 nights in front of the pyramids followed by 2 nights in Zamalek over the Nile) and ending in Dahab (9 nights in a very cosy Airbnb and a PADI OW course).

That leaves us with 3 free nights between the two.

Initially I wanted to spend that time in Luxor, being myself very into history. But between the not-so-great logistics (expensive local planes with layovers) and the city being extremely touristy, I’m second-guessing whether it’s the right call for our honeymoon.

We're looking for something that feels more emotionally immersive than just box-ticking temples, ideally something with romantic scenery, unique character, and space to breathe. I still want something memorable, but I don't want it to feel like we're rushing or trapped in tours.

So now I’m torn between:

• Sticking with Luxor,
• Using those 3 nights for something less conventional like Fayoum,
• Or even extending Cairo and adding a side trip from there.

Would love your thoughts: is Luxor worth it for a honeymoon if we’re already doing Giza, Saqqara and Cairo museums?
And if not Luxor, what would you suggest for those 3 days between Cairo and Dahab?

Thanks in advance!