As long as the shop is nothing more than a roof over head there is not a lot of need for lighting during the day even once the walls and doors are in place if I were to install some sky light panels most of the time artificial lighting would not be required for most things. except on cloudy and rainy days when there will be limited light from the sun.
However the lack of lighting means daylight hours only and most of the time this is just fine but for those times when something has to go out the next day and it is already sundown.
So I bought a couple of 100 watt ultra thin UFO high bay LED lights to see how much light I can expect to have given that I place 4 or 5 on each of the 3 center trusses about 10 feet apart I could go with fewer larger lights but the fewer the number and the brighter the lights the deeper the shadows are more fixtures affords a better overlap which helps to reduce or eliminate shadowing this is what a single 100watt fixture does

taken with no flash 50 feet in front of the shop

Taken no flash from the S.W. corner of the shop

no flash looking up at the roof

I think I will eventually have 12 to 15 of these in this section of the shop and 6 in the second section
2100 watts total of lighting in the 6000 square footage of the eventual size of the shop will use less electricity than the lighting I had in my old 6000 sq ft. shop and have twice the illumination I had 15 of the 500 watt halogen and mercury lamps in that shop the energy consumption was around 7.5 KW and only produced around 105,000 lumens of useable light
These things cost about the same as just the bulbs of the other kind of lights plus put out nearly 1.8 times as much light per unit @ only 100 watts power consumption per disk. Additionally I will probably set them up so I have 3 to 6 zones so will only have the lights on that are needed
All calculations are approxamated