Proposed setup

[Oxymoron]

Hello all I would really appreciate some advice as I find the controller a bit intimidating.

I have already preordered the profilux 2 pack currently on promotion and have taken steps to upgrade to pro 3 (contemplating 3 ex)

My setup will be as follows,
120 gal with 30 gal sump SPS
2 mp40s
some brand of dimmible t5
2 thermometers, 1 in display, 1 in sump,
return pump
uv sterilizer
skimmer
and eventually a calcium reactor
small pump for TLF reactors,
Seperate 15 gal RODI ato tank

I'd like to be able to monitor, ph temp salinity orp and also control the calcium reactor. Also to control the ATO function. (Have I overlooked anything here??)

Can you please recommend to me which route I should take?
I'd really appreciate the help.