Hi, I need to migrate a 200 GB Photos library (on an external HD) to a Macbook Air with 128 GB SSD. Obviously, I will be utilizing iCloud Photo Library and the "Optimize Storage" feature to allow most of the library to reside in iCloud (I have a 2 TB storage plan). How do I do this? I can't transfer the library over directly as it won't fit on the smaller SSD, but I don't want to break it up into smaller libraries either. Thanks!