According to your replies, most of you suggest choosing option 2 and 3. Option 1 is still not needed since we are still in good progress of market improvement. Moreover, USDT won't gain big profits in the future. I can say that I agree with that, so I assume to hold and plan to buy more with my extra funds if it seems at a good time to pick new assets. Once again, thanks for your suggestion, guys. <I'll lock this thread>
Guys, please don't quote all the body of the thread. It is not needed and only makes your reply looks bad. <Don't do it again in the next occassion>