Hi tegs. Fingers crossed for you that everything is fine with your lap.
To answer your questions, I put as requirements proven donor and age. I wasn't particularly interested for the donor to look exactly like me, but I felt better to know that she had donated successfully before and the dr knew how she will react to the treatment.
In regards to immune issues, I don't have any problems in the family, but before going to the egg donation path I just wanted to make sure I've done / checked everything. And I'm glad I did. After consulting with dr M I've discovered I have high nk cells and high ANA. I don't know what the result would have been without the immune treatment. It is a pain and additional stress and a lot of money, but at least I knew I did everything I could.
If you want you can have some blood tests done just in case and for your peace of mind.
Let me know if you need more details.