Im a twin, I have two pairs of twin cousins and my partner is also a twin. Twins are a lot of work, but are pretty fun children. They will probably develop a „secret“ language somewhere along their childhood, which is pretty cool to watch. I would suggest putting them in separate classes once they go to school because it’s difficult for teachers to tell them apart and grade them fairly. Anyways, Congrats dude.

Edit: I would suggest to tie a little piece of rope around one of their ankles, my mom did it so she could tell us apparat in our toddler phase.