To garyg20
Yes it is possible to request to live with a friend or batch mate. You will most probley be living in a hotel for the first 3 months. Hotel's are not to bad at all.
Married roster's are NOT possible YET. But you can request to buddy flight with someone on trips. You can also request the same days off together.
I live with my partner and we do this all the time.
Etihad are revamping there whole system. In the next 18 months or sooner everything will be online. You'll be able to swap, offload flights & pick up extra flights all from home. Also be able to partner up rosters & build your own roster. Like emirates.
Medical as above. You should get your medical done at home. I know it cost's alot but at least you have peace of mind knowing your not going to be rejected when you arrive here.
Hope that helped. Cheers