RE: WAX CPU, NET and RAM - How much do you need?

A few things to note but I am not sure if they are out of date as I dealt with WAX about a year ago:

CPU cost changes depending on how busy the network is. So in times of heavy load, you may need a lot of CPU and it's possible for you to use up more than 100% of your allocated CPU.
RAM is used for NFTs and you can always burn/sell NFTs to get back the RAM used up for some NFTs.