S&P 500 looks overextended, MACD cross, (3,16,2) close strategy

FX:SPX500   S&P 500 Index
50 0 0
looking for input on this hourly strategy, just started messing around with it... shows 70% profitable profit factor 10.802, max drawdown 677$, avg             trade 52.44, Net profit $50,870 on initial capital of $100,000.
This a good strat or do i have much to learn?
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