From the N-470 page:
"If you are eligible for naturalization under section 319(b) of the Immigration and Nationality Act (INA) because you are married to a U.S. citizen working for certain organizations overseas, you are exempt from establishing the naturalization residency and physical presence requirements. Therefore, you are not required to file Form N-470. ..."
Going further:
https://www.uscis.gov/military/citizenship-for-military-family-members
https://www.uscis.gov/policy-manual/volume-12-part-g-chapter-5
It looks like the best option would be to go via 319(b):
No N-470 required. If spouse will be stationed abroad for over a year, without any prerequisite time period where you will need to travel back to US to attend the interview and ceremony, declare in good faith that you will continue to live with your spouse abroad after naturalization, and return to US once their foreign deployment ends. Declaration in good faith is basically a declaration of intent, if circumstances change for some reason, then well, they changed and they won't yoink your citizenship away. In this case you may or may not be required to file I-751, depends if you've been a CLPR for at least 1 year and 9 months at the time of the oath of allegiance (if yes - yes, if no - no). You will still need to provide the normal proofs that the marriage is legit as for I-751 even if you're exempt from filing it.
Other possibilities like 319(a) (3 years married to a US citizen provision) and 316(a) (general 5 year provisions) require you to have resided in US for at least half the statutory period without breaks in continuous residence (no absences over 1 year, and with absences over 6 months being able to prove that you didn't abandon your permanent residency). So if you'd want to follow to join your spouse abroad those might be better, you'd live in US for 1 year, file N-470, go join them, and file I-751 and N-400 when able to. Only upside here is the ability to get naturalized while abroad.
My take is just go with the special provision for military spouses (319(b)).