I just took the April MCAT and I used Kaplan to prepare. The "classes" were mostly a waste of time, but the practice materials were awesome. I did every single practice item available in the library, including the AAMC problems.
Your verbal looks good, and it's the hardest to improve. If I were you, I'd review some of the major topics in physical sciences that you might not be up on (ie - pH, equil, projectile motion, harmonic motion, etc). Do that for one or two days max. Then start on the practice tests again. Find your weaknesses. By the way the Kaplan topicals are much, much harder than they need to be. If you get a 50% or better, you're doing well.
Biological is a little tougher to stucy because it's mostly memorization. Don't waste your time going through the Kaplan organic stuff - it's way too detailed. You're better off just focusing on a few reactions like SN1/2, E2, NAS, NAA, EAS and making sure you know which of these would occur. I totally blew off the other reactions and I got a 13 on BS. Oh, on the biology stuff the Kaplan materials might help. I made a "cheat sheet" with the major things I needed to memorize (mitosis, endocrine system, digestion, etc) and looked at it whenever I had a moment.
Hope this helps. There's really no perfect strategy. I think taking full-length tests under test-like conditions helps a lot. However, also do at least one full verbal section first thing in the morning so you are prepared for how hard it will be to read that junk as the first thing you do!
By the way, I scored six points higher on my real test than I did on any of the full-length Kaplan tests. I don't know if that's typical but it might make you feel better.
Pam