I am guessing you already re-located by now, so no need to say much about the security situation. All I can say is that it has significantly improved and this is the safest period of time since 2011, when the revolution started.
As for bikes, buying a bike abroad and shipping it to Egypt might be a little bit cheaper, but by the time you clear it from customs, the effort and time is not worth it. You can buy any kind of bike you want in Egypt, new or used, you just need to know where to look. I bought three used bikes till now since 2010, all were great deals (Kawasaki z750 06', CBR 1000rr 08', KTM 530 EXC 11').
Hope that helps, and drop me a message if you need help finding a bike.
I am Egyptian btw...