Hi Barry,
Egyptian customs are pretty high but you can manage with some bribe, they call it undertable. It depends on the engine power of your car, it could be anywhere from 40% and up for more than 1000cc.
As far as visa is concern, tourist visa is for max 3 months, although they issue initially for just 1 months any visa type. If you took business visa, you can get upto 6 months stay and for more than that you will need to pay around EGP150 for extension, until then its free. But every month or two you need to extend.
Please remember, the movement you land, register in nearest passport office that you arrived within 7 days to avoid fine. Then after couple of days apply for extension, don't wait till end of your term as Egyptian government don't have computers in offices so every thing manual as it will take anywhere between 3 to 6 weeks for police varification. As per law you will get 15 days after the validity of visa, in that time you can go out of Egypt.
As for job, your both subjects not well taken, so difficult to get job. Remember most Egyptian still don't know English. Dont take any job unless its well documented by law or they will not pay you salary or kick you out any time as they like.
As for wedding, as caution, Egyptian girls are very short tempered and don't keep faith on their husbands. Initially during courtship, people not feel this but eventfully this have to be faced. Weddings are 2 types, one is just like signing an affidavit in front of advocate, which is legal in public but not in government and one needed to be sign in front of magistrate, that is legal in law.
you can contact me via my profile, for any egypt legal details.