Hi Anthony,
Sorry to hear that. For initial POC/demonstration, can you follow the procedure I showed in the following blog How to do a quick "POC" with SAP hybris Marketing with your own data
Also, for any non-SAP data you have, I recommend you load it as interactions. You can use "items of interaction" scope item from rapid data load package OR methods described in the inbound interface guide found @ SAP hybris Marketing – SAP Help Portal Page
Interactions are key in hybris Marketing. Once your own data as interactions, it is available in segmentation and can be used campaign managment..etc. You can also extend interaction data model to suit your needs (eg: adding new fields).
I dont recommend to use DJ1 and DJ2 for loading non-SAP data.
Thanks
-Bharath