How to change leveling system Thread

I have following question:

• how to change amout of points I get per one level (attribute, skill, weapon)
• how to change amount of experienece needed to level up. I mean how to change experience curve (the way it calculates)

I don't have Viking Conquest and I don't want to. And please don't advise me using cheats.
Also you can me suggest some mods that does that things.
Lastly, how can I make my changes compatible with Floris mod.

Thank you for your answers.