awesome tank,man. sorry to hear about the fish. i have a move coming up (just like every other summer since 2004). i think ive got it down to science but those tangs are pains in the @$$.
good call switching to lumenarcs, you cant make the ceiling any higher! thats exactly why i went with them, my tank will be in a basement and the top of the tank is already 5 feet high. i might not have space to have the reflectors another 16" to get good spread.
-nick