| A common classical approach would be to put a pair of relatively flat curve omnis around 6-8 feet away and directly opposite the open lid. If the mikes have good clarity then you won't need to separate them that much.
For close miking I prefer to mike either end of the piano first under the lid and avoiding getting too close to the hammers, then add a third mike for the false stereo effect, if required.
If you have all the capsules for the Oktavas and the band room is either okay or can be made that way then I'd try the Oktavas as omnis. Otherwise, close, I'd use the the Royer at the far end of the piano and an Oktava close to the keyboard end to capture either end of the tone. However, close miking is a pretty sh*tty option bearing in mind the way sounds develop in a grand, you'll be tweaking positions for a while.
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