Try getting at least aimed and power shot because they're such a wonderful skills early on :P
exp for KQs is good if you're not close to the max cap, after a certain level it becomes slower than regular grinding. as for useing stones/pots, well, you should be useing them for regular grinding either, and you'll probably use a lot less in KQ, so my final advice is to stick to KQs while it's faster than regular grinding. you'll probably make less money out of it, but a sporadic upgraded wep can make up for it ;p
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