It's very difficult to predict what your LSAT score will be this early in the game. When you are a week or two away from the real test, and have been consistently scoring in the same range for a while, then you'll have a better idea.
It's unlikely that you'll increase 3-4 points with every administration of the exam. The thing about the LSAT is that it gets exponentially harder to gain points the higher you go. In other words, going from 155 to 160 is a big leap, but going from 160 to 165 is even bigger. Far fewer people will score 165 than 160, and only a fraction of all applicants will score above 170.
You would have to be making huge statistical leaps forward to consistently increase your score towards 170. In short, it's a lot harder than it sounds.
Additionally, it seems that most people score lower on the actual LSAT than they did on practice exams. I think most people find that they plateau within a 3-5 point range. I had a friend who scored 174 on the LSAT, but even his diagnostic was something like 165.
I'm not saying it's impossible, just that you should understand the statistical improbability of going from 149 to 170, and make a backup plan accordingly. Think about other options just in case you don't score 170, and other schools you may want to apply to.
Thanks. But so far I had been getting closer to my goal. I had been taking early morning tests and review at night after work and my MBA duties, and I had been scoring in the 165-168 on 33 minutes per section (thanks 7SageLsat app for timing and putting noise ie. someone yawning coughing, for the past week . Although of course the REAL LSAT is different and would see a drop (hopefully not significantly!) I feel confident with the 170. I think really understanding the key on applying the logic in the questions (most of my mistakes in the beginning is in this section) and checking your work diligently- makes the most difference. Take tests in different situation, in the park, in the library, in a coffee shop, in the office (I do this after work!), home, etc.
Point is - everything is possible (and workable)... keep on having your eyes on the prize and positive vibes!