Whats the max on all three if a person split the attributes between the three?

Is it 400 a piece?

80 chances to increase, at 10 per allocation, and starting values at 100. The math is on you.

Well, the max level you can reach is 81. That's 80 level to reach, which means 80 points to distribute.

So even if you split it equally, its +260 in each attribute, and there are 20 unused points left.

Its 360 in each area with an additional two points to put in any. So 360 370 370 or 360 360 380 depending on what you do. I'm actually dividing evenly too.