Markovich,
I am Russian but live in the U.S., so I believe I have some perspective on applying to b-schools in this country. Here is my profile:
https://www.gmatclub.com/forum/t56921
First thing I can recommend is not to rush with your applications. You stated that you wanted to submit your application in a two-week time-frame. That is extreme, especially given the time it takes for even a native speaker to write good quality essays. Based on what I saw from your posts, your grammar needs some polishing. I would recommend hiring a consultant to look at your essays and correct your grammar, which again will take some time. In addition, to show that you researched the school and know exactly why Haas is the best fit for you given your career goals, you need to do some research about the school, talk to alumni, etc. Again, you don't have time to do that to apply for Fall 2008.
Second, you have no guarantee that you will score higher on the GMAT or TOEFL the second time around. You are taking a huge gamble relying on higher scores AFTER submitting your applications. Third, why CA? Why Haas? Why Fall 2008? Have you researched b-schools in the U.S. at all? I don't mean to sound harsh but you sound like a person who decided to go to b-school yesterday, write essays today for a school that you only heard of because you want to go to "cool" California with your buddy and be accepted. That is just not going to happen.
I would contact helg and R.E.D. who are members of the GMATclub and who also happen to live in Russia. They will tell you just how hard it is to be accepted to top schools in the U.S. and how much time it really takes to finish one application.
I realize that my tone is almost accusatory but I mean well. I just want to shake you/pour cold water on you, so that you realize the lightness with which you are approaching the application process.
Feel free to PM me if you need some advice or have some questions, and I will be happy to help you.
Meanwhile, I have posted tips on how to improve verbal here:
https://www.gmatclub.com/forum/t50635
I hope you'll find them helpful in your quest to improve your verbal score.