That sounds really good. In the end, however, the weak battle AI allows you to get into trouble with everyone at a time and still prevail. In order to really enjoy your fantastic mod, it's probably best to play by the rules (consciously adjust your playing style and focus a bit more on politics).
In MTW as the HRE, I got excommunicated and was at war with practically all my neighbours all the time. Still, it wasn't so difficult to win the game. As soon as you have 5/6 regions, noone can really wipe you out anymore. Especially, when besieging, the battle AI is just too weak.