Cooling not required
I started with suggested bed temperatures but found that at 40 degrees bed the filament tended to warp so I bumped it up to my normal PLA bed temperature of 60 degrees and found that the warping stopped and made a good grip on the glass build surface.
I tried to get the best quality print so I first printed out 3 smart temperature towers (https://www.thingiverse.com/thing:2729076) to test for the right heat and to test how the cooling fan affected the overhangs. The 3 cooling fan speeds were 0%, 50%, and 100% and found that the cooling fan had no real affect on the overhangs.
From this i found the 195 degrees was the best temperature for my printer(CR-10 mini with a j-head hotend and Petsfang Duct system )
Print settings
Level
Intermediate
Filament
Pha-Beta 4.0
Printer
Creality
Print bed
Glass
Printing Chamber
Open
Bed temperature (°C)
60
Thickness of layer (mm)
.2mm
Type of bed adhesion
Hairspray
Extruder temperature (°C)
195
Nozzle size
.4mm
Support
NO