The entire process takes several months but it can vary as not everyone knows exactly when their female starts developing follicles, they may be too small to detect. Starting from the initial breedings with the male, follicle development is the longest part where you could be looking at 3-4 months time, then ovulation, only after they have ovulated is when they are deemed 'gravid'. After ovulation its roughly 45 days before the female lays eggs.
In total your looking at about 5 1/2 maybe 6 months to get a clutch out a female, just depending on what speed she wants to go.