I know nothing about the 10" Newt but the 17mm LVW like the 22 LVW are excellent eyepieces.
With your scope the:
17 = 70x
22 = 54x
24 = 50x
and your 38 = 31x
50x as a finder ep is a bit much for my liking. Viewing @ 70x is a favourite, I tend to use it often. I think I would go with the 17mm and keep the 38.
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