Yea, just like you said, I think diversifying your asset is a good idea - this allows you to get familiar and find out which one works well for you and your trading.
I think their volatility can be harnessed if you know what to do with it. Some of the exotic pairs that I tried are quite good to use if I knew what to do with it.
The fact that you are asking this which means that you have no idea where to start first. Can I recommend you to start learning on what forex and trading in forex are all about? You can check out this good course: https://babypips.com/learn
And then you can also keep checking out any youtube...
This is something that is done more on your preference. For me, I tend to put SL/TP between 1:2 ratio risk rewards while maintaining the money management.
If you are aware about the risk, you should know that it is never reasonable to trade with that much leverage. You are better off trading in normal. In fact, you can try out demo trading with 30x and see how it can be easy or difficult for you to manage money and risk.