You bought from EW with no musical training? That's quite a commitment. Their stuff doesn't come cheap. Anyway, with such an expensive library you should be capable of making some pretty good sounds from it, so definitely read up on their instructions and tutorials. They're often neglected, but are important all the same.
If you're feeling overwhelmed then the best move would be to scale back. Try composing fewer parts, or for a shorter length, or both. I'd say to not worry about completing a full-fledged orchestral piece just yet. Get a good grasp of the basics first. I believe the best way to do that is to practice a
lot. Be constantly practicing, even if you're not at all happy with the results.
Looking at existing sheet music is also crucial and you can get a lot for free at
IMSLP. You say you have no training at all but hopefully you can still at least read it. There are countless scores to choose from, so if you don't know where to turn first then just go for some of the really well-known stuff (Moonlight Sonata, Vivaldi's Spring, etc.). Even though most of the scores available there do not have the the same electronic twist you're aiming for, looking at the way others composed will also help writing less long, lazy notes.
To answer your question, I thought the pad was fine. Pads are usually just there to fill the soundscape, so it's a little hard to get it "wrong". So long as it's not distracting the listener from anything else, then it should be okay. That being said, you might want to focus on just the orchestral side before delving into electronic stuff (to repeat: scale back). Get comfortable with that before getting into newer, more experimental territory.