REG on 9/30

I kind of slacked going through the material (studied for a few weeks in July/early August, took some weeks off, and then wrapped up the material this past weekend). Never reviewed the material again after going through it the first time, but going through the material the first time I did best on R3-R5 (scores on modules were around 85-90%), and was fine on all other sections (80%). I have 4 weeks of full time studying until I take my test but I'm still worried since I didn't do any of the simulations while going through the exam.

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I guess my question is:

A.) Should I go through all the sims for R3-R5 as I know these are heavily tested

B.) Is memorizing these rules gonna be hard/am I screwed with the time I have left since I didn't do a good job of reviewing throughout

Also how effective is the spam MCQ method? For past exams during my final review I would read the chapter/section, do MCQ's on that chapter and repeat this for all others, and it seems like a lot of people don't really read their notes and just hit the MCQ's. I'm pretty nervous/doubtful I can pass with the time I have left, but probably shouldn't be. Derp