numa - this is such a tough thing to decide xx

One person explained how they felt about their embryos in terms of baking a cake. Did you have a cake when you had all the ingredients out on the bench? Did you have a cake when you mixed them all together and made a batter? Or did you have a cake once it came out of the oven? As far as she was concerned, the cake was only real at the end. So, she felt her embies were just the cake batter, ITMS.
But that was HER opinion, and it helped her decide what to do. Some of us feel like we have made a cake earlier on!!

Do you know what the laws are in relation to embryo donation and contact later on etc?

My husband always said that if someone asked him to donate his sperm for research, he'd happily oblidge, and I guess I would do the same with my eggs. But it feels a little different when I think about a embryo.

Good luck with your decision making. Whatever of the 3 choices you make, i hope no-one ever questions your choice or gives their opinion. No-one else is walking in your shoes, and no-one else (even fellow IVFers) has shared your parenting journey. You do what feels most right for you and your family.