I love your supplement repertoire - simple, basic and highly effective. Plus, you will be saving a considerable amount of money by purchasing each of these supplements individually, rather than buying a product that contains a mixture of these ingredients.
With the Dymatize ISO-100, I would suggest consuming 1/2 - 1 scoop 10 minutes prior to your workout and 1/2-1 scoop immediately following your workout. Your serving sizes will vary depending upon your body mass. You also don't need multiple scoops per meal as you can only digest a certain amount of protein at any one time due to the availability of enzymes within your gut.
Assuming that the intensity of each workout is high, ensure that you are ingesting adequate dextrose