It was a fairly rough recording but not that dissimilar from one of Symphony X's preliminary recordings I've heard. You guys definitely have tallent to pull that off
. I would agree that your biggest weakness here is timing. You were only off pitch in a few places that I noticed. Being a singer myself I know it is much harder than it seems and I wouldn't be comfortable singing with most of Symphony X's songs. You're sound fits this style fairly well. Have you ever taken lessons? I would recommend
http://www.singingsuccess.com/
Brett Manning's program has helped me out, though I haven't really had an outlet to use my voice other than jamming with some guys.
Take care and good luck!
Kurt