White hostas in a garden in early morning. Gray card read F45 for 5min with 100 speed tmax rated at 25. I remembered reciprocity failure factor to 9 minutes but forgot the bellows extension factor which after the exposure I realized would have doubled the time. The hostas will look brillant but I am worried about the leaves and other shadow detail. My normal TMax developer time is usually about 5min. The whole point is for a rich dark gray background with no highlights, rich detail. How should I proceed?