Non-precision approach from a higher-than-published platform altitude

[amark16]

Hi all,
Wanted some input on the following scenario and how to handle on an A320, or any other modern jet for that matter:

We are being vectored for a non-precision approach such as VOR or LOC. The published platform altitude is 2000', the FAF is at 5 nm and the descent angle is 3.00 degrees.
ATC leaves us at 2500' and does not clear us to the platform altitude of 2000', even if requested. When and how do we start the final descent:

A. Start the descent at published FAF of 5 nm, but use a higher descent angle initially, say 3.50 degrees to catch the proper vertical path.
B. Start the descent before you reach FAF, say at around 6.5 NM using a 3.00 path?
C. None of the above (Insert correct answer here)

Thanks!!