For me it took about 3 hours to carefully go throutgh 50 question blocks of destroyer in G-chem and orgo and carefully review all answer choices afterwards and carefully read all explanations. For bio it took a little less time but again i can not stress enough how important Carefully reading through every answer and looking carefully at all the choices was.
Hey I also am currently using destroyer and i go through every question just as klutzy does and it takes be a while but i do intervals of 10-15. I look at every awnser choice and then i research and look topics up in my books or on wiki. Its a very useful study tool.
If you are at it...say 8-10 hrs a day...then you can do it in less than 3 days for all 4 sections...this is including the time required to go over all the answer explanations and looking up stuff that you are not too sure about. If you have only done kaplan for biology, then you are in for surprise.
Well It Took Me 5 Days To Do Destroyer Reviewing Each Answer Carefully, What I Did Is A Complete Science Test Each Day, 30,30,40, However Bio, I Had To Cramp The Fifth Day To Finish. Not Including Math