It is rather safe, considering that hashing difficulty and price of the coin you are mining are staying on the same level.
Trading is almost like gambling sometimes, it is elaborate guessing.
You need to realize that when you are trading there are people who lose and gain money at the same time.
It is far easier to find yourself in this second group.
Mining nowadays is not the same with the old times because the difficulty has increased and I don't think it will be easy to earn with it. So I want to suggest just go with trading because it's more reliable and you don't have to spend and think about of solution with the high consumption of electricity of your rig.
A very wise idea. Because with the only trade we can get and such by using bitcoin trade. And also I'm sure the advantages it brings far more than do the mining, because trading only requires skill and also internet connection. While mining requires complex things, ranging from skill, money, power, place, etc. So, it would be much more efficient and effective use of trading to earn a lot of money