>to keep costs down just for experimenting: why not using 12V equipment (saving lamps & floodlight form automotive shop etc...) saves at least the inverter. Otherwise just to run some lamps a simple 500W inverter from a hardware store is sufficient.
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For system sizing: a single 32W panel (2A peak means 6-12AH)for a 450AH battery seems a little undersized. Daily average charge maybe 120Wh.
Also running a 100W floodlight (can you use a few saving lamps instead ??) + other staff for some hours will drain your battery fast.
Running an average of 3 hours 170W is more than 500 Wh/day so solar panel should be better 140W.
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Pulling an AC cable from your house will cost much less.... but experimenting is fun.
