You have two potential issues:
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Higher angle cameras produce more distortion on the sides of the image, and compress the image together there, so the sides will be less accurate than the middle
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Higher resolution is generally recommended for larger machines - You’re looking for more image pixels distributed over the area of the bed
Those will work against you a bit, but if you want it for rough placement (within a mm or two) it should be fine. You will need to angle the card toward the camera for that lens, and that’s ok - it’ll still be able to measure the image distortion just fine. Make sure you attach the card to something flat, like MDF or foam-core poster board. If the card is warped or curled, the software will treat that as lens distortion and try to correct it.