Import JSON into Mongo DB and use it with Autoform / SimpleSchema?

Hello,

I would like to import lots of different json files and use it in forms (with aldeed:autoform)
I could manually create the corresponding SimpleSchema variables to do so after import, but I assume there will be compatibility issues (json from mongoimport VS structure by SimpleSchema). Anyone with experience on this? Caveats?

Or maybe there is a full-stack package /tool to help with this import process? What would you do?

Thanks
java99