Since this is too complicated for me to figure out in any deep sense in 2 minutes (and I'm not sure exactly what computation Omega is doing or if it's even well-defined), I'm falling back on EDT, and two-boxing to get the $2M lottery. EDT might be suboptimal in a lot of cases (smoker's lesion), but at least it's unlikely to choose wrong, which is better than I can say for what I'd pick if I tried to use TDT or CDT-combined-with-uncertainty-about-who-I-am (whether I'm a copy simulated by omega to determine payoffs for the real copy of me).