Admittedly, we're not talking about the exact same timeframes, because once the OP goes up to Platinum, their Gold year automatically terminates and the new Platinum year commences. However, assuming that the OP is already quite a ways through their current year, then the effect of this change will be minimal.

By avoiding Platinum in the current year, their NEXT year (starting September 2023, the "2023-starting year") will also be Gold, and they also have a head-start thanks to the giant rollover, only requiring an additional 66XP flown in the next ("2023-starting") year to also get Gold for the year after that (starting September 2024, the "2024-starting year"). Your reference to 2025 appears to be inaccurate, as that is still too distant in the future for us to say anything about rollover.

However, if the OP goes up to Platinum, their NEXT year (starting either July 2023, August 2023, or September 2023) will be Platinum, and no matter what they fly, they have a soft landing to Gold for the year starting sometime in 2024 (either July 2024, August 2024 or September 2024, the "2024-starting year").

So, going up to Platinum this year would even remove the need to collect those additional 66XPs, and maintains Gold for almost the same period, through which it sounds like there wasn't going to be a lot of flying anyway, so there would not have been any further rollover to be concerned about going into the "2025-starting year"