Why don't you just begin by pumping full SPR until that job change? Get that SPR bonus to 25 and get the 5% critical bonus + the SP pool to spam skills. You don't need to worry too much in these levels since you have the KQs to help you level. After that you can do the 1:1 STR:END ratio to get the base dmg and HP/def up. Just my opinion.
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