I think you are missing umbrellas, and have only ONE set of grids, a total of three pieces, for the standard reflectors, and have no mylar diffusers and no scrims and no reflective or subtractive fabrics for the scrim panels...you need more grids, like at least two each in 10 and 20 degree grids, for the standard reflectors. You have only four total lights in a MASSIVE studio! You will need TWO lights just to light up a big gray seamless to lift it up to pure white: so you'll be left to light ther entire rest of the set with...two lights. One key light, one fill light...and then..no hair light, no kicker light! There needs to be a bunch oif smaller stuff too: A-clamps, grip arms and heads, a smaller boom stand, and a handful of other types of grip accessories.
Personally: I think that for studio work, monolights are the wrong solution....a pack and head system is better, and more-efficient and costs less. Let's take an older Speedotron 2401 Watt-second black-line power supply system, which I own two idental units of. Each pack can power SIX flash heads on instant-connect cable plug-ins, split into three channels, with 1/3 stop clicks over a three-stop range....so....If I NEED 1200 Watt-seconds, I have that much power--plus, I have 1,200 W-s left over to distrubute through up to as many as five more outlets! If I need SIX lights, each at 400 Wat-seconds, no worries. If I need an 800 W-S and another 800 W-S, I have that...and have another 800 W-S left over, which I could channel through an additional 1,2,3,or 4 flash units!
If I absolutely NEED 2,400 Watt-seconds, I can use one, single flash unit to deliver that much flash power, and then use the second power supply unit to deliver another 2,400 W-S through up to six flash heads....and
flash "Heads" are much less expensive than monolights are.
Add up the cost of one power pack and six flash heads, and it will be far less than six self-contained BR Siros 800 units. But the real issue comes in the fact that you have just one "type" of expensive, complete,
800 W-s top-end limited flash unit with each monolight, and it is rather large and heavy: some flash brands like DynaLight, have very small,light flash heads AND offer also some small,light power supplies. Norman has decent pack-and-head systems, as do other brands. Consider just how cosrtly it is to go above 800-Watt-seconds with a monolight system! If you need 1,600 W-s you need two entire monolights! 2,400 Watt-seonconds requires three, entire, complete monolights, synchronized--and HOW do you mount them into a single modifier?
Your studio is a large one: you need to move past the idea of 800 Watt-seconds being the right base power level for each light: that is not the right power size! it is wayyyyyy too expensive for hairlights and accent lights! You WANT the ability to have low-priced, small, plentiful 150- to 200-Watt-second lights, and at least five of them, or better yet, six lights.
Price ranges and outlet numbers vary a LOT: Speedotron makes affordable, 6-outlet and 4-outlet packs; some companioes offer VERY expensive power packs with few outlets for high dollars (Profoto); somne are in-between. Information of studio flash systems can be hard to come by these days. Speedotron just updated their web offereings this year for the first time in a long while. Look into Norman and DynaLight, and other brands through the
B&H Photo website.
Consider having a very experienced person help you on an equiupment list.