Hi Ket and welcome!
Yes, a few more eyepieces is the way to go. Something down around 10-12mm focal length would give you a better range.
But a good 2" 2x barlow never goes astray. I have the ED version and am happy with it for visual. I haven't tried the non-ED (cheaper) version. They will be sourced from GSO (Guan Sheng Optical). I would be confident that it is worth spending the extra $30.
But ask here first in the wanted listing - someone might like to sell you one.
Happy observing
Eric
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