My friend Joyce (the gingerbread girl) also reminded me that there are ready made sheet protectors with 6 (4"x6") slots by We R Memory Keepers. With them all you'd have to do is sew the bottom row to make the 3"x4" slits. A bit easier and much faster. So if you're interested in them Scrapbook.com does carry them.
I've been a bit busy today, so I haven't done my next set of pages, but I'm going to work on them tonight along with some other things... changing my blog design, finishing a LO I started this morning... but when it's done I'll let you know!