I personally prefer more singles for 0.25-0.50,
I would suggest 12/37/12 myself, but I can see the benefit of having more fives too with the big max.
The $5 would be the work horse chip.`I think 170 x 1 per table is plenty. I wouldn't argue against having 200 x 1 per table. Any more in a NL/PL game and it can become a hassle. Especially if you have players that aren't experienced with handling a massive amount of chips.
Also, it is dependent on what your work horse chip is. Within a few hours the five becomes the work horse chip in my game.