bio cube 29 questions

[rattler]

Hey there,
I have a oceanic bio cube that I have had since day one (Jan 2006). Now has come the time to do some mods on it. I have purchased a Radion 2 LED to mount on the hood not in the hood. Also just purchased a Tunze 9002 skimmer that I want to put in to the middle compartment as well as a Tunze nano ATO to regulate the level better for more consistent skimming as well as leveler parameters.
Has anyone out there done these mods to a bio cube? what should I watch for and what level do I need to set in compartment 2 and 3 for best skimming.

Another thing I was thinking about was a TLF 550 reactor fed by a MJ1200 pump to run carbon and GFO in. My concern is without a sump this reactor will be mounted below in the cabinet. Do they leak or is there a better reactor out there that will allow me to do this with piece of mind.

Any and all suggestions are welcome.