Hello everyone, crypto experts. I have 17 coins from 2003. I plan to buy BTC at 100k when the price drops to 55k, and sell at 75k. For example, when it goes from 55k to 60k, I will sell one-third of my coins and keep two-thirds. Later, I can push the price higher and wait. Also, I have been holding a coin, VET, with 20k VET coins, bought at 10k. I feel uncertain about how to evaluate this coin. I would appreciate guidance from all the experts.