Don't want to burst your bubble, good for you if you think you can do it but I think you've missed a few things in your business plan/costs, some examples, I'm sure I've missed some:
Medium: based on your nute/water costs, doesn't look like you'd be doing hydro, soil/medium, containers, labour to maintain them, disposal if you're not recycling the medium?
Labour: 10x 1000's, say 1.5 lbs per light = 15 lbs per run, drying/trimming, packaging? You doing it all yourself, for free? Typically you'd pay yourself a salary and factor that in, even if you plant to do it all yourself.
Environmental control costs: Fans, Carbon filters/scrubbers etc, all these need power, was that factored into your hydro costs?
Lights: Cost of replacement bulbs? (see depreciation for ballasts)
Pest control, crop loss: These are intangibles, may or may not happen, kind of like insurance, you should factor something in, usually a percentage, say 3 - 5%. In other words, nothing rarely goes 100% according to plan, shit happens.
Depreciation: Besides expense items like the above, replacement bulbs etc., you'll need to depreciate your capital/equipment to allow for replacing dead ballasts, cooling/dehumidification equipment/filters/fans. Running 365/24/7 your equipment won't last forever. Some can be longer term like 3 years depreciation, some shorter. Take your total cost of equipment for the initial setup, pick a depreciation cycle for each major item, divide by the time by an appropriate/realistic life cycle for that component, then factor that into your monthly/yearly costs.
I run a pretty efficient small/personal op, supplying myself, some friends and typically 2-3 med customers at cost or free depending on whether they can pay. I use LED's for veg, CMH for flowering (much more efficient than hps), and only pay 7.5 cents/KWhr. Even then I estimate my total costs to be close to $1/gram when including all factors.
