I played the vanilla game a while ago, but I never played all the DLCs.

So my question is: With all the DLCs installed, will I hit Level 30 far too soon, if I try to do everything the game offers? And if so - how much slower should the leveling be?

I'm asking because there are a couple of mods that let you choose how slow you will gain experience.

You could lower the difficulty, but I doubt you would do that. You could also not take the Perk that boosts the amount of EXP you get.

It seems I need to clarify what I meant.

I don't want more EXP, I want less, so that I don't hit Level 30 after doing only half of the game.

I said lower the difficulty, so you don't get as much experience for killing things, and NOT take the Perk that rewards you more. Emphasis on NOT TAKE.

Oh okay. But as you expected - I am not willing to lower the difficulty.