Cleaning ancient H14 sails

Hello everybody!
I just picked up what appears to be an ancient H14. Sail #5491 (I'm still trying to track down the hull #). Her lines are UV rotted and the hull is a bit powdery. No delam from my initial inspection. Nothing some TLC and $$$ won't put back into bristol shape.
The sail and tramp (solid orange vinyl) are extremely riddled with mildew and mold. Both are still in once piece and showed no signs of splitting/thinning.

My question to the list: How and with what do I clean these with? I was sold some mildew cleaner, but some of the ingredients looked to be a bit corrosive for use on such an older lady. I'd appreciate some feedback on what people have successfully used in the past.

i made the sail nice and tight and then used my dads power washer on them. Everything came off easy.