Buy and sell is the best way to make an ideal amount of money. You should consider staying up late and watching the market before using any trade bots. Take advantage of the opportunity now before the price surge.
Also invest some of the btc in some altcoins and when a new ICO comes invest your money in such good coins so that you get the coin at very cheap price and after holding some months you can make a good money if it has a good future . Also trade only a certain percentage as trading is very risky.
Since the OP posted this couple of years ago where ICO's has less influence and maybe was not the primary option to invest, unlike today where there a lot of ICO's around, while the others are scam. If he knows how pick the right ICO that has a future and good active team behind it, then that would be the most profitable way to earn good returns these days.