Please confirm ID sync inbound file setup is correct

I've reviewed the instructions for uploading ID sync file here:

https://experienceleague.adobe.com/docs/audience-manager/user-guide/implementation-integration-guides/sending-audience-data/batch-data-transfer-process/id-sync-file-based.html?lang=en

I believe I understand and have a good plan but please kindly confirm.

I want to create an ID sync file with these 3 identifiers:

1) CRM ID, this is the MASTERDPID for our implementation

2) Hashed email ID, from our internal system

3) Subscriber ID, also from our internal system

File name will be:

adobe_id_(DPID of the Data Source that contains CRM IDs, our MASTERDPID)_(DPID of Data source that contains hashed email IDs)_(DPID of Data source that contains Subscriber IDs)_(UNIX time stamp).sync

Example:

adobe_id_123_456_789_1648825591.sync

where:
123 is CRM ID DS DPID
456 is hashed email DS DPID
789 is Subscriber ID DS DPID

Sync file contents example:

0000123456<tab>471a8e5a8d0a0b04a79d63962fded38d679c5db3a450738decfaae42f7a00000<tab>0035W055001laNnQAI

<tab> will be actual tabs in the file not literally "<tab>"

Thanks in advance.