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My personal practice is to never image with Oiii when the Moon is in the sky (there are a few exceptions where you can pinch some time, like a thin crescent just setting or rising and more than 90 degrees away from your scope). It does not matter how thin the Oiii bandpass is of your particular filter. The problem is that the Oiii band pass is smack in the middle of the reflected light spectrum of the Moon. I have watched the impact of the Moon on Oiii histograms and that tells the story.
By all means do all the Sii and Ha you wish when the Moon is hanging around. Generally accepted principles still apply, do not allow the Moon to shine into the scope, keep it at least 45 degrees off the opening assuming a good light shield, and 90 degrees is preferred.
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