Ok, good start on the choke tube size 31mm, the smaller the better on a street engine, [maintains mixture speeds] as majority of your driving will be on the idle/progression ccts.

On such a smaller capacity engine the mains currently installed seem to be too large at a educated guess I would be looking at 115 - 130 size, pump jets 30 - 40 and idle jets [curious why they are listed as different sizes for each barrel of the carb]

Another point to consider with the pump cct is the duration that the fuel is delivered and not just the volume of fuel.

Were these carbs originally off a Toyota 18RG twin cam?

fuel pump pressure I wouldn't exceed 3PSI [if they are anything like Webers]

Double ccheck the fuel float level.

Found this handt site also. Mikuni carbs