1. Depends. For Ark, does your deck have ways of getting rid of artifacts otherwise, and can those artifacts shut you down? Also, it doesn't work with Nazareth up for your opponent. For GotE, do you have Pithom and the rest of the deck discarding stuff? If you use some of it, then use it all.
2. I would say FW is a great add to most T2 decks in general, but even moreso for an Egyptian deck. Don't forget that she counts as one, even if she is not Genesis.
3. You won't be using the draw on offense, generally. Your rescues will be Joseph (or people who get Joseph) or Jacob, preferably to pre-block play RtC. Then if you don't have either, you will rescue with Benjamin. If you don't have any way to rescue with all three of those...you're in trouble anyway. Also, there's not really room for drawing enhancements in the offense, you search instead for some speed there. The drawing comes from the D.
