Good strategy, the only drawback is that you need to keep the money in the exchanges instead of the wallets...
it is always feels good that when you come back to check the exchange account the orders are all filled. you don't need to worry about the ups and downs by placing these orders
Bitcoin value changes day by day and it's the most important in the selling you will check the value you know the price and it will easy to sell it and you will get the profit for the bitcoin. Bitcoin is the profitability for the future purpose and you will gain for the bitcoin.