My settings as default, i have good start for -25C
If you want scale all fuel simple change Crank VE, and if you use Speed Density match (100kpa,low rpm) area with same VE too, see my VE table.
I use twice downscaled req.fuel, so my VE=122 same as VE=61 if used default req.fuel calculations.
Use Alternate fire at cranking by default. But if too cold and small injectors, you probably need big PW>127ms, it is not supported, therefore use "Fire all banks at cranking", and set divider equal cyl_num for sequental, and cyl_num/2 for semisequental.