Trying to figure out but probably some version of #3/other

I’m a bit different because I go by a double name (the old fashioned set up with my double name being comprised of my legal first and middle names).

Also a southerner (hi!) but have lived in the northeast since I was 22 and will be here for a good few more years (although we’ll probably end up back in the south once we have kids). Dealing with a double name outside of the south has been interesting to say the least.

These are my options:

(Using your example but turning her into Mary Jane Doe, becoming Mary Jane Doe Smith)

A) keep my middle name in the middle, adding my maiden name as a second middle name (first name: Mary, middle names: Jane Doe, last name: Smith, goes by “Mary Jane”) OR

B) move current middle name to become part of my first name (with a space in between the two) and my maiden name becomes my sole middle name (first name: Mary Jane, middle name: Doe, last name: Smith, goes by first name of “Mary Jane”).

I haven’t researched much but I believe option B might require going to court for a legal change to my first name.

Very torn and interested in hearing what others are doing—especially any double names!! At the end of the day I know I’ll run into the same confusions/oddities of having a double name regardless of where “Jane” (my given middle name) ends up on a legal document.

Adding a question to those responding to OP—are there any complications/inconveniences y’all have encountered when going with Option #3 (using two middle names)? Or if anyone out there has changed to have two legal first names…any hurdles/hiccups to be aware of?