Basically you’re doing just buy and hold kind of strategy. I’d not recommend follow something like that on such volotile markets like cryptocurrencies. So in 2018 your trading strategy would make a drawdown up to 70% witch is huge. What really works well are intraday arbitrage strategies and market making strategies. I’d recommend to follow that topics to get steady returns on your investments. For researching intraday quant models I’d recommend use tick by tick historical data from bitdataset.com and their’s free API.