From what I have read, there are no clear advantages to interviewing at any particular time of year. The primacy effect can help, the recency effect can help. Holidays can put people in a good mood. Nearing the end of the process can too. And any of these things can get in the way too. So, you should interview whenever it works out.
So, will it work out for you to interview on that coast now? Probably not. You can't submit your ERAS app until 9/1, and there are no programs that I have ever heard of that will interview someone without an app in hand. Although some will interview before it's complete (typically without the Dean's letter, sometimes without all the LORs) I think it's highly unlikely that they will interview with NOTHING in hand.
Although the money and time invested are quite high if you have to fly back, it's all an investment in your entire career.
Good luck.