Step 2 will always be your foe, whether or not you will be its foe is another story.
In general (despite some of the squawking that happens here in the forums), doing USMLE WOrld ONLY is a bad idea. If you were rocking all of the shelves, took great notes from the 18 different books you used for shelf prep, and have read those notes every weekend for the past month AND are using USMLE World Only for your "dedicated Step 2 studying," then sure.
If, like most people, you are entering a dedicated period of studying having totally forgot the difference between urge and overflow incontenince from your OB rotation or the Vaccine schedule from your Peds rotation, you will likely need something more.
The typical "i just want to do well, i dont really care what I get" (aka average, aka 230 this year) is to combine First Aid or Step Up and USMLE World. It is likely the you will undergo question burnout and want time to read something informational without engaging in the mental struggle of questions. Likewise, you will want a place for your notes to go. Why not used a book some one else has taken the time to write and to build an index for to help you take your notes, reading details about a disease you may not have thought of, only to better use the questions for reinforcing the reading youve done, opposed to wallowing laxidasically through the qbank?
General Strategy: (1) Read First Aid or Step Up in the first week. (2) Do 50-100 questions a day for 3 weeks, taking notes in your book and rereading it or parts of it on the weekend. (3) One week of taper or practice tests. (4) Ace the exam.