How much is downloaded in Notebook?

How much is downloaded in Notebook?

Hi.  Looking at Notebook as an Evernote replacement and have a question.   So far, Notebook shows a lot of promisew.

Back when I was a paid Evernote subscriber, they had the option to specify the notebooks that were available offline, which is a great feature.  I could specify notebooks for a couple active projects and leave the archive online.

My current (locked!) Evernote database is about 7 GB in size.  If I import that to Notebook, and insstall the app to my iPad, if the entire account is downloaded locally, it will essentially fill up my iPad storage.  Is there a way to control this?  If you can't control, the Notebook Pro account limit of 100GB wouldn't make sense for many mobile devices.

I'm currently doing a purge of Evernote, and removing attachments where I find them, but I'm sure I'll still have several GB. 

Thanks,