If doing it full time, starting from let's say $10,000 to play with, and btc being in between the same volatility now and how it was about a year ago when it was at around 6k..what could you net a month, realistically?
It depends upon which coins do you buy and at what price. These days all the coins give some returns but for maximum return you need to select not only good projects but also trending projects like defi. No one can tell you how much can you earn as it alsi depends upon your strategy and the risk which you are willing to trade.
If you are willing to take risk, you can make a lot of quick money in futures but you can lose money too .