You can use the platinum plugs. Bosch would love to sell them to you at their inflated prices. That's why they list them as an option. They won't do any harm. The body of experience from many members however indicates that they don't run as well. Seems the best bet is just the good old cheap copper core Bosch Supers.
Back in the '70s, when Porsche came out with the Turbo 911, the factory put some fancy $8 ea. (in 1970s $$$$!) plug in the engine. The teams that raced the cars however just used the regular plugs at $1 ea. They didn't find enough benefit to justify the slight extra cost.