A 5 increase is certainly possible. If I were you, I would focus on games because this is where people see the biggest improvement. I personally started at -7/8 at games and now I am around -1/-0. So there is your 5 pointincrease right there. Good luck!
... and hope) that a 4 pointincrease in LSAT is unlikely for ... that a 1-2 pointincrease is highly likely and ... went up by one point. I also know that ... be raised by one point and 2 points was ... certainty.
A 10 pointincrease from 150 to 160 will have a different strategy from 160 to 170. Where are you scoring right now and what's your section breakdown? That will help people provide you with more specific advice.