I just check weeks 5 to 8 for quant and it seems that is more practice and teaches you more tricks and shortcuts. is the foundation of math from the first four weeks enough? I am currently almost done with week 3 and my test is in 4.5 weeks.
Totally depends on how well are you’re able to absorb and apply the material. In my opinion no course can guarantee a xyz quant score including GregMat! Also, what does a good score mean in this context as for some people a good quant score may lie in the range of 165-167 while for other it may be 160+ etc…