Anathema is right on.

In response to other bits...

First of all, what experience growing do you already have personally? Just curious where you're coming from; do you have good success rates cloning for example... makes a lot of difference in how you set things up.

For a perpetual harvest using the 3 lights you have, put 1xMH1000 in your veg room.

Having twice the HPS wattage is preferable, because flowering plants get big....but if you plan to use the second mh1000...

Put 1xMH1000 + 1xHPS1000 in the flower room.
The plants that just came out of veg can go under the MH and you move them across the room so they finish under the HPS.

If you want to harvest 5 plants per week on a perpetual cycle, with a standard 60 day flower time, you need to plant to have 35 sexed plants plus 10 unsexed plants in the flower room at all times.
The formula is 7n sexed plus 2n unsexed, n being the target harvest-per-week number, and assuming a 50%male cull.

That also means that you have to start at least 10 plants per week from seed or 5 as clones, again, assuming 50% males and 100% survival rate.

I think you should start pretty small and get a bunch of practice under your belt, and make sure that you have no security worries before going commercial. But that's just me and I'm stodgy like that.