ok sir
first thing is to check the local zone laws and the local tax deduction rules ( some cities/states have certain laws to where they can be placed and some offer tax breaks/rebates )
the next part u understand that to do this means the state has the right to enter the land and look at the gear anytime they want too(if u are feeding it back into system for a reduction on what u do not use).........if u gorrilla it and they see it they have to report it or lose their jobs so do not except a break ......u do this legally or u need land that well only sees u on it ............out in the woods / 10 foot high wall around the yard
next to do this right to run a little still in the woods with a 6 pannel system bank of batteries auto rotate system/charging/converter was around 2200 when i looked into it ......u are going to need alot more batteries then me....u are with 2800w (not counting fan power and ac) a hour........the new pannels are alot stronger and more effective then the old ones.....but u are looking at a SHIT LOAD.....i ran your 500 numbers 65k in my area u break even in the middle of the 6th year and make a profit from it after that
the last thing u have to take into account .......the system will pay for self in the long run and with federal/state tax breaks/rebates ( u feeding the national grid with your extra).....but are u going to be in that home long enough to justify it
your last option and the more effective one ) .....look into the wind power if u are in a area u can set it up and has a nice steady flow ........they pay for themself faster and give more engery
but all of this requires u going to the local borad and filing permits and all that crappy paperwork .............(still was in the woods and i could gorllia it on hunting land a buddy owns ) other wise 200 400 more in fees and permits
one important note ....the correct system for your house u will have power if the grid goes down (get a shotgun and tell ppl sorry suffer in the heat)
to help u gather numbers here