Residential Detached Garage Calculations

[AndyD]

I am building a large detached building that consists of 960 square feet of garage plus 576 square feet of woodshop. My plan was to put a 100 amp main breaker panel in the building and feed it with a 100 amp 2-pole breaker in my existing 200 amp house service panel. I need to submit calculations to the AHJ to prove the house service is large enough (small town AHJ, not a dedicated electrical inspector). I am an engineer, but do very little residential work and am not familiar with these sections of the NEC. I can calculate my existing house load using NEC 220.83. I have a couple questions when adding the new detached garage loads: Question 1) Do I add the dedicated circuit equipment (table saw, dust collector and air compressor) to the 220.83 calculations just like appliances to get the new service feeder calculation?; Question 2) How do I account for the lighting and 20+ convenience receptacles in the new detached garage? Can I use 180VA for each of the receptacles and the actual connected lighting load? The 3VA/sq ft rule does not apply to garages, but 180VA rule does not apply to dwelling units (it's a dwelling unit calculation). If the garage was attached, I think I'd have to ignore the lighting and receptacles.

Question 3: When I do the calculation for the feeder to the garage panel, I can't use any demand factors, correct? I was planning to add up all of the dedicated equipment, 180VA per receptacle, actual lighting load and 125% of the largest motor.