You're in Brisbane right? You can just about grow all year round so just plant them whenever you please. I've just been sowing seeds in the best commercial brand propagating soil I can find at Bunnings and potting up to the best commercial brand potting soil. This works for me but I'm sure someone will come along with a better solution. While the plants are growing I just use some liquid Dynamic Lifter once a fortnight and swap to Thrive Tomato Food liquid fertilizer when they're big enough to start fruiting. Again, there will be much better products you can use but I prefer to not baby the plants too much and let nature sort them out. I probably sacrifice some pods by doing this but hey, just grow more plants.