The HSA contribution will be $4300 each since you won't have family coverage at any time in 2025.
I have posted a link to the 2023 instructions for form 8889. see those for line 3 but use the 2025 limits
https://www.irs.gov/pub/irs-pdf/i8889.pdf
The family coverage limit only applies if either or both had a family coverage HDHP.
