CF V7.5 Wiring Check

[ColdVizjerei]

First time using a CF, wanted to make sure I've got a good idea of what to do before I actually begin.

Some questions I'd like to get clarifications on:
1) I don't believe I need a resistor for the "main" die, is that correct?
2) Did I do the math correctly for the resistors for Psuedo color mixing?
3) If I were to add a RGB common cathode 5mm LED to light up a crystal chamber, does it matter which LED goes to which color channel? Say since the "main" die is green in the diagram, does that mean that I need to wire the green from the 5mm LED to color channel 1?
4) Since I'm not using a Color Extender in this build, is it worth it to have the R.I.C.E. port?