This is simple, you don't have to get the larger release version just *to read it* upon release, use your local library for that, then buy the smaller version you want for your personal library when it comes out. Win, win.

Of course, if it happens to be a VERY popular series, there may be a wait period before you can borrow a copy from your library, but probably less than 6 months.

Another option is buy the larger version, read immediately, then sell on.