Parents of 3, which order is best?

I am starting this to say I don’t love playing God, but unfortunately we’ve gotten to this point and I need to make a choice. I am prepping for my transfer for my second child. I have a beautiful, healthy baby boy and we’re so excited to give him a sibling. We have one girl embryo and one boy embryo left (aka they have a 65-70% chance of working). We hope to have 3 healthy babies one day, but don’t know which one to choose next. So for those that have B-B-G vs B-G-B can you give your pros and cons to your situation?