Yep. 3-4 weeks is good, 5-6 even better.
Remixing a few times is good too.
Using "Mykos" from Xtreme Gardening will do wonderful things for your plants when you finally grow them. Mykos are a type of mycorrhizae that live with the plants roots and after experimenting with this product over the last couple of years, I will never grow without it again. Highly recommended. Can seem a bit pricy, but worth every cent. The increase in health and the efficiency of nutrient conversion by the plant seems to be incredibly enhanced.