Well I can't start right off the bat say that if had started five months it would have been much better. Profits from mining are getting lower and lower. Mining profits is controlled by the difficulty of the network. More diff.= less profits. And as more and more people start mining the diff. goes up.

In the past few months, mining got so much hype and everyone bought gpu cards and started their own mining rigs which pretty much explains why all cards are either sold out or are for insane prices.

I started two months ago and I can say that it's not bad considering that my electricity is not expensive. I pay about $0.045/kwh.
 
That's a lot. If I were you I'd actually not get into before doing the maths and calculating how many months needed to ROI (keeping in mind that your calculations can be useless if diff. goes up for example.)

It's really your and only your decision. Think about it and since you're trading as well compare it with the profits of trading and do the better.

Good Luck.