Sounds like you have a great start to an awesome track. It sounds like the things that are giving you the most trouble is the mixing and general tweaking of things to get the sounds you want. While things are sounding pretty decent as of now they also sound kind of messy. The thing that's getting to me the most is that snare because I have to constantly hear it. I think it would benefit from a faster cut off. Letting it take up so much extra space is gonna muddy things up in there. Let the pads create the atmosphere not the snare. That isn't to say that you can't have an interesting sounding snare... you just have to watch that space and mix things with a more critical ear. That bass drum sounded like it could use a more solid layer. It sounds really hollow.
I'd have turned down that lead just a tad and hit it up with a filter to clean up those highs.
That string pad was perfect. Loved it sitting ethereally back there :]
After giving the track a few listens to I really think my only gripe is with the drums. Resample, layer, compress, distort, EQ, side chain... actually, it didn't sound like you were side chaining at all. you can side chain an instrument to the drums so that every time the kick or snare (or both) goes off it momentarily de-amplifies the instrument it's attached to (such as a lead or a bass.) This really helps clean up mixes and gives more punch to those drums which is a huge characteristic of those harder dance genres.
Peace and love. Good luck with finding a sound in dubstep <3 <3