Verbal Study Plan and Advice

Sorry if this has already been addressed elsewhere. I was just wondering if the verbal tests the GMAT club offers were designed to be extremely difficult as the math tests were? I am currently launching my verbal gmat prep and trying to figure out what my verbal weaknesses are. I am trying to get my verbal up to at least the 40-42 range (consistently) before I take the actual exam. I read bb's very detailed post about verbal study plans, but I am still trying to figure out how much time and prep I need to put into the verbal section, personally. Time is not a severe issue at the moment, as I plan on taking my first exam in mid-April. I definitely don't want to treat the verbal section as an afterthought, but I feel I will get more of a raw score increase spending the bulk of my time on math, rather than on verbal (after I have gone through all of the guides listed below, of course).

Background so far (pre-verbal studying):

V35 on gmat prep #1
29/41 on GMAT Club Verbal Test #6

Current plan:

-MGMAT Sentence Correction, MGMAT Reading Comprehension, MGMAT Critical Reasoning
-Powerscore Critical Reasoning Bible (I figure the more practice exercises the better)
-GMAT Grammar Book (thanks, guys!)
-Kaplan 800 2008-2009 (yay, my local library has a copy of this!)
-Kaplan Verbal Workbook 4th edition -- Exercises Only! (library also has a copy of this)

I believe that sentence correction will be my biggest weakness (I have yet to review my incorrect answers from the gmat club test). I used to be a very voracious reader and feel that I would get little out of reading a lot of books at this point in time. Re-learning and memorizing grammar rules is my main priority at this point, along with practicing critical reasoning type questions. Would 2 hours a day for about a month to a month and half be realistic for aiming to increase my raw score by 5-7 points from my current standing?

Thanks in advance for your help and advice!