Hey, thanks for the insight folks!
I'll go with either 2 or 3 of the 48" VHO driven tubes then. I'm curious to see how the GE Daylight Ultras will look off of a VHO ballast. I may have to set that up in the next day or two just to run a test...
Good point about the sand as well. I've found the same thing when mixing sand sizes in my salt water setups.
Sounds like I've got my work cut out for me regarding researching the appropriate fert regimen.
I guess the work (i.e., time dedicated) to maintenance is the least of the concerns that I have regarding the switch. My main beef with my reef tank is that every time I turn around, I need to spend another couple hundred bucks on something that stops working right.
The lighting alone, with two $80 MH bulbs and two $25 VHO tubes is enought to nearly break my laid-off-guy's aquarium budget.
Thanks again for the responses!