I am developing a simple strategy that boils down to: When markets are good be in TQQQ, when markets are bad be in cash ( money market ) It's based on technical indicators. When price crosses over 10ema, 20ema, and 50sma buy signal, when it 10 crosses below 20 sell signal. I'm working on deploying it to aws, i've got data from alphavantage and the only thing left to do it execute orders via api. What are your strategies?