Interestingly, I wasn't even intending to put in the FF prelude. I just wrote a countermelody in that I thought sounded good, and then after the fact realized that it contained a bit of the prelude. I guess it can really get into your subconscious.
I think you're right about the arppegiations though; it IS a bit overused in that part. If I remove most of them, but leave a few in, it'll probably sound a little more natural. Otherwise, it seems good to go.