From what I recall, depending on the difficulty you might not get Bitter Peace. I recall that on hard, and perhaps normal, if you chose the options for harder Barbarossa, the Bitter Peace might be disabled or far harder to fire. The last time I played the mod with Germany, I was pushing well beyond the Urals by the time it fired on normal. I can't recall if it was late 42 or early 43.
I played on Normal and had it fired by December 1942. I had to capture Sverdslok to trigger it.
Now it is May 1943. Spain joined the Axis and I began capturing the North Africa from Morocco and I am pushing the Allies out of Iran and Iraq. In the meantime, I started implementing Generalplan Ost in Poland. Despite all the oil sources I captured, I stil have less than 1k oil. My goal is to clean the Mediterranean in 1943 and invade Britain in 1944 with the navy which is under construction at the moment.