I think the original answer to the question is simple. Can you do the two stakes he mentioned on 600 chips? Of course yes.
It's just a question of how to divide them up. For the two specific games he mentioned. I favor a singles heavy breakdown, and spending half the chips on fives and up just seems like way too much. If we get into "future-proofing" and accommodating a wider stake of games, then a more fives-heavy breakdown is in order.
Personally, I think especially for hosts new to the forum, "future-proofing" is overrated. Just get what you need to get started on the cheap and keep reading the forum for a while before deciding on what you *really* want to invest. Your tastes will likely change in two years time anyway, why not figure that out first before planning every eventuality?
There has to be a middle ground between just five bucks per stack in singles and quarters or making the entire stack quarters. (Never have to make change in the second case
, but no one wants to move two racks of quarters into a pot either.) Personally, I have settled on the idea that 40-60 chips per player in NL/PL is the "butter zone" for giving players enough chips to move around without being too cumbersome to count. You can surely get by on less, but that does mean breaking big chips rather frequently on early streets.