I'm designing a 1 bbl (31 gallon) set up with a 55 gallon blichmann (yeah, bling, bling) and am considering a plate or immersion/whirlpool JZ style chiller option. What would you do? I'm wondering if 50' of 1/2 inch ic would do 30 gallons quickly - that'd be my preference, but a nice second option would the a therminator type. Pump, of course. Opinions?