Help Syncing a massive library of Books in iTunes 10

So I added my entire library of eBooks to iTunes 10 with the desire to sync a few of them to iBooks on my iPhone. It just so happens that iTunes adds them all checked. Which means if your sync is on and you don't have much space you can go way over. So I start unchecking them one by one and it is taking forever. Here is the fix, uncheck the sync books in the books tab. Ahh, now I have my space back back on my device for syncing but that doesn't solve problem. Now go back to your iTunes Library under books and manually drag a book or two into your device. Magic! they sync over manually. However, even better you'll notice that when you go back to the sync books page on your in devices you'll notice that "Sync Books" is turned back on and only the books you manually synced are checked. Yea!