500 chip set: how to choose quantity for each color chip?

[Blue Lagoon]

I order this 500 chip set:

http://www.pokerstars.com/fpp/store/accessories/chips/

I can choose the quantity for each color. What would you recommend?

I think I will order a classic 4/3/2/1.

200 white EPT chips
150 red WCP
100 green Caribbean Adventure
50 black WCOOP

Do you think that the white chips will be grey and dirty with time?

Is it a better idea to balance the quantity with 3/3/2/2?

It's mostly to play NL tournament.