I really like your enthusiasm but here are few things that may fast track you to getting a start in the industry as a 2D artist. First read the
Art and Science of Digital Composting. Understanding Composting more valuable than knowing Nuke, Fusion, AE, Flame, etc.. Second take classes from FXPhD, learning how to use a piece of software while doing small projects will have a lot of value. Third try and position yourself to become an intern in a posthouse. Being on the job will teach a lot and you can really see what it's like to work in this industry.
Dude, 2-3 years comp software will be so many versions ahead you wont be using the same version from that long ago
AE is good for about anything you want to do at this stage. As for PLE if you have a watermark over your project is not a big problem as long it doesn't destroy the image. This is where being an intern has it's benefit as you could probably get your hands on a full version of high end software.
This week I had to start learning fusion, I still haven't wrapped my head fully around it but knowing Shake and Nuke, it hasn't been that hard to do. What I'm saying is worry about learning compositing and making good visually interesting images, with whatever piece of software you can get a hold of.
