Sweet, so I'm not in the single's club it looks like. I'm using FL 9, myself.
As for the track, I'm quite liking it. And I agree with timaeus222, the piano delay is totally fine. Though I could be bias here, since I'm a huge fan of delay... But er. There are definitely spots that need filling out, and I will also agree that the pad at the beginning could use something to help add variation to it, whether it be subtle filter work-- another lead, etc. Or maybe even a bit more ambience to accent it? The separation on the strings to the choir pad is nice. But when the kick comes in, it feels... A bit muddier than it should be, at least to me. Is there any side-chaining going on in there? It sounds like very little to me, if any. I think maybe some EQing on the lower frequencies of the other instruments aside from the kick, and perhaps a bit (more?) of side-chain strength on the kick signal to the pad could help raise that kick a bit and give it a bit more clarity in the midst of the pad. The transition to the piano and percussive section sounds awesome. I don't necessarily have an issue with it being emptier there, but perhaps if you came back to that phrase at a later point in the song you could add a more driving rhythm and a pad or arp sequence to back the section up? But of course, it's your piece. Maybe you had something else in mind?
Also, I too would be more than happy to assist in FL help. But maybe I'm less experienced than some. I've been working with FL for only about... eh, maybe three years now? Either way, other veterans are going to teach me a thing or two as well.