375 gallons and need a new chiller

[BAJA272]

I need to replace my chiller We have 1/3 horse unit but would like to move the chiller outside. The 1/3 hp unit is a little undersized (runs 15 hours per day...) I'm curious which unit the large tank guys are using.

The specifics are:
2100 watts of light
375 gallon display
2-sequence "barracuda" pumps
2-tunze pumps
and lovely south Florida weather (warm)

Will a 3/4 hp chiller work outside in 85-90 degree weather?
any recommendations would be appreciated.