Combining Red Sea diving with sightseeing trip ?

I dive, the rest of my family doesn't (but likes warm water), and we are considering going to Egypt next December to escape winter here. Are there any tour operators which can be recommended which could put together a tour combining some dive time at a place like Sharm al-Sheik with a very good tour of major antiquities on land ? We could take up to about two weeks max, I figure...

Check out Egypt Online Adventures - they specialize in combination dive/land trips. Our trip isn't for another two months so I cant give a full report yet, but the service we're received so far has been A1.

Suggested itinerary for two weeks skipping the tour agent and instead buying a copy of Lone Planet Egypt thus saving some coin.

Fly to Cairo - spend 4-5 days there, markets, Giza, Museums, etc. All can be arranged easily with a descent hotel getting you a cab for transport. No tour guide really need with a good guide book.

Take the train to Luxor - spend 3-4 days there, Temples, valley of Kings, etc. If the family is in descent shape rent bikes for a day.

If time permits - from Luxor go to Aswan and see Abu Simbel.

Return to Cario - pickup dive gear and
Fly to Sharm - spend 4-5 days diving. Send non divers to St. Cathernines for 1.5 days (overnight at the monastery, hike to the top of Mt. Sinai for the sunrise).

Fly back home ...

Just be aware that winter time in Sinai can be rather chilly after the sun sets. Not compared to Boston of course, but just so your family don't expect caribean nights. Water will be circa 23-24 Celcius (73-75 F) in december and most local DM:s will dive in dry suits.

good luck

Christian