Filing an I-485 would be foolish as it would be immediately denied. You can file an I-130. Be aware, that she will be deportable if she overstays......and she would never be able to adjust status through you as a Green card holder if she overstays.
Looks legal, but why are you doing this? Why not just get an official court house marriage which would be 100% solid? Never leave room for USCIS to question anything.
The OP is adjusting status from a K-1. No I-130 is required. My point, as @TBoneTX stated, was that a person who enters the US via a spousal visa can work immediately.
Great report. One thing you can do now is to schedule a passport appointment for some point after the oath (if you can schedule that far out). That saved us a lot of time for wife's passport as appointments were very hard to get in early 2023. Congratulations......it is a great feeling being out of the pressure of USCIS.