I do not know the exact parameters, but I would suspect very fast and very low, and wings swept fully aft for your model. RAF doctrine at the time, especially the first part of GW1, was vey much fast and low.
I believe some of the JP233 release trial photos and videos you get on an internet search show trials under more sedate conditions.
This article has a bit about the doctrine and mindset of the time, and mentions JP233 profiles of very low level, scroll down to execution, phase.one.
https://medium.com/raf-caps/operatio...e-52fa7fb8b26e