The most important things have been said. There are a few little things I would like to add.

First and for all use presets. If you want to accelerate your workflow, presets are your best buddies.
Music production is dividable into three parts:

• Creative: The process of coming up with ideas (e.g. chords, melodies, rythm and etc.).
• Composition: Arranging the track, filling it up and spicing it up.
• Mixing/Mastering: Mixing your track, doing the sound design and at the end mastering your track.
  

So if you look at these parts, sound design would come at a later stage. Following this up, it's very important to split these different parts. Multitasking is the worst thing you can do. Split every process up and focus on one thing at a time. That's why I advise to start presets at the creative part, to focus on melodies and chords. Later on you can always change and improve the sound you were working on.

I hope this helps!

Sources: EDMProd & http://getworkflowbook.com/