Ok so in 40k people gave me the advice every 500 points you should at least use up 1 troop slot as I play chaos daemons this is usually 1 herald and a troop now my question because fantasy is done by percentages for each selection how would I go about setting limits to each section so I don't over spend on 1 section too much I know about the basic rules of having 2 core and 1 lord/hero and the % they are limit to.

The army i play is themed nurgle daemons of chaos
Using this Method so now i can play with my 40k round base
[URL="https://www.youtube.com/watch?v=1b0jJ-t3SXo"]Link here[/URL]