wouldn't it be a good idea to sell some bitcoin to be able to do that?
It seems like the logical thing to do. But, I'm new to trading and wow it's more complicated than coding. What do you guys think?
Hard to give a general advice without knowing a little bit more about your current situation. If you already made 4x profit on your initial investment it's a nice payout for you, but BTC dropped a bit right now. If you had more funds available I would recommend to keep your BTC for now and rather use fiat money for your alt coin trading endeavors. Like if you got some Christmas money from your family or your employer I would rather use that. Trading might seem difficult at first but if you are already into coding than it will come much easier to you to build your own trading strategy. I would recommend to start our with a fairly easy technical analysis strategy, only using a few trend signals and see how it goes for you. By starting to trade actively you will learn a lot by actually doing it rather than only a technical approach by only reading.