You really really want to add control in your main deck, and a lot of it if your FNM environment is anything like mine. I run 4 o rings 4 murders and 4 tragic slips. I played a deck like your current build, and I went 1 and four in my first fnm standard. I added the control and went 4-1 last week. if you have them add 4 illness in the ranks to the sideboard. it helps against esper decks with the lingering soul chump blockers.
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i would main deck the o rings and murders. definitely main deck some tragic slips. silverblade paladin is awesome for exalted. relativly cheap also. around ten bucks each. here is a link to my exalted standard tourney deck. went four and 1 last week. http://www.mtgvault.com/ssgbadaxe7cl/decks/bw-exalted-standard/