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Your AFOV (apparent field of view) will be similar but the real field will be less due to the increased magnification. Some eyepieces can suffer reduced AFOV (vignetting) when used with a barlow but I doubt you'll have that problem with the eyepieces you're using.
You will probably notice increased eye relief with the barlow; this can make it harder to hold your eye in the right spot with eyepieces that already have long eye relief, but is a bonus with eyepieces that have shorter eye relief.
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