Advice on my 2 x BDXL M-Disc computer build, for archiving data?

[QuestionAsker]

Using spare computer parts for a PC that will be dedicated to burning archival disks.

I was thinking of getting a case that can install 2 x 5.25" BDXL drives, so I can either:

burn two 25gb archival m-discs at a time (one onsite copy, one offsite copy), or

burn disk B on one drive, while the other drive verifies disk A

My questions are:

1. Is this a good approach?

2. What would be a better drive combination?

Pioneer BDR-2213 (primary burner) + Pioneer BDR-212UBK (secondary burner)

or

Pioneer BDR-212UBK (primary burner) + LG WH16NS40 (secondary burner)

3. I know most of those drives are super hard to find these days... so also looking for guidance in that regard. (Open to other drive suggestions.)

Thank you in advance for your help.

[Subtitles]

A case with two 2 x 5.25" can be a bit difficult to find, assuming you don't have it yet. Anyway the case would be quite large.
You can use a smaller case and have the two drives outside the case. This is what I did with my Fractal Design 7 Compact case.
https://www.amazon.com/dp/B00O077B24?ref=ppx_yo2ov_dt_b_fed_asin_title
Check this thread please
https://forum.videohelp.com/threads/412555-External-Blu-Ray-Drive-for-a-New-PC-Case-wi...out-a-5-25-Bay
#25

Edit: You can use USB BLU-Ray drives they are not expensive but I prefer the internal 5.25" drives and the solution above.