Yes, I'd start D65 TRC2.2. Maybe 150cd/m2
Hmmm... I have another question: the only canned setting that gives the user D65 and a 2.2 gamma is Broadcast Video. Do I use that or do I use something else and change the parameters? I've done the Broadcast Video, but the curve it produces isn't flat by a wide margin. On the other hand, I have to say, I'm not sure what kind of curve I'm looking at.
(By the way, the 150 setting works fine, but out of curiosity, what does m2 mean?)