Here is what I found to be true for me and wheels in the wind. A rear disc stabilizes the bike to a point but a large gust will play havoc with a rear disc.
The front wheel is the key to managing wind. The deeper the wheel rim, the greater the wind response with the trispoke being the worst but generally the fastest.
The key to maintaining pedal force in the wind is relaxing and let the bike lean into the wind like a sail. You have to trust the lean is okay.
The other option is to keep the disc and go with a narrower rim. If you lose pedal force in the wind due to wheels, it is very hard to make up later due to “more aero” wheels.
My suggestion is dress rehearsals in windy conditions with disc / trispoke, TT helmet and skin suit. And do runs with different wheel combos.