Flat file -> Cube

I'm loading some flat files that contain deltas to a BW data target. I am considering the following options:

1. Flat file -> ODS - > Cube and let ODS manage the deltas and run the full load to the cube from the ODS.

2. Flat file -> Cube directly.

Is there any reason why I would need to go with 1 over 2 or would 2 work well enough?

Thanks