Which idea group as Cologne?

[Riqposso]

Firstly i got offensive idea as Cologne, fully annexed wurzburg, hesse, brunswick, cleves, nassau and trier.

I'm completely fine with aggressive expansion.

Protestant religion about to explode, the date is 5 march 1495. But i can't decide whether going with religious idea is fine or not?

Or is there any other better option than religious? Thought about diplomatic and trade but couldn't decide.

If you have any idea please just share with me!

[Riqposso]

Just annexed anhalt either can't go aggressive wars about 15-20 years.

[Silver Felyne]

Well, since Cologne has Divine Ideas, which gives Missionaries, you might as well double-down on your conversions with Religious Ideas.

Diplo would be better as a Christian Monarchy (ability to marry into heirless thrones for PUs), but DOES work well with Religious as Deus Vult + Reduced Warscore Cost.

[Riqposso]

thank you for your comment, i'll move with religious