No, I have not reload anything or cheated, I don't cheat, its really no fun cheating, and actually, the GC was pretty easy up till around 1650 then it started to get though.
Well then, you must be a very honorable player... I myself am often tempted to reload when an early manufactory burns down, plague hits my core provinces or stability drops to -3, unleashing a civil war. Personally I find the early stages of the game much harder than the later; especially with Sweden, which needs to crush Denmark quickly in order to survive against the Danish-Russian vice, and also needs to manage a prosperous colonial empire to fund her research.
In those cases when I am still playing in the 1700s (for some reason I usually get distracted and start new campaigns instead), I too am usually pretty much dominating the scene, but I dislike completely ahistorical expansion.
/Doomie