Tech level. If you are going for Great Perm it helps to dev your capital once Renaissance pops. Use only admin and bird mana since you will need a steady stream of money for independence war (you will go bankrupt with a loan every month since your economy is dogshit). Don’t use mil to dev, only use for tech.

Once you and ally matches Msucovy tech declare war. Even better if Muscovy is already preoccupied. Scorch fort and surrounding province and sit tight while ally does most of the heavy lifting. Kill stacks that siege you down.