Personally, I think this is what you should do:
Your SPD is very very good but you can't leave your other main attributes out to dry. Your tackling should be sufficient so no need to put more points into that. STAM on this LB is just alright, I'd actually continually train it on relaxed for a while. With 4 of your SPs, I'd put them into AGI and the last one into VIS. Then, put your 4 other equipment points into VIS as well. Your core three stats are SPD, AGI, and VIS. Try not to neglect any of them. SPD will be good for a while. You actually have as much speed as my LB at lvl 23.
I hope that helps a bit, good luck!