They key is to understand why 4 are wrong, and 1 is right. You might memorize the answer but I you know why 4 are wrong, and 1 is right...you're doing it right!
167 will be hard by dec... Give it about 6-7 PTs before you really know where you stand. I will predict your avg will be around 158-161.... The next jump will be the hardest thing you ever do... Patience is the key