From your post and the list of OTN and FO you have, you sound like you might be up to a challenge.
I also belong to the Yahoo Group Ample Knitters. Lots of the women in the group have successfully upsized patterns. I've learned a lot just by reading the messages, but if you are interested, particularly if you want to knit something from an ordinary book, you might investigate that group. I'm sure you could get whatever help you needed from some pretty savvy knitters.
Then you wouldn't have to just find ample patterns, you could upscale whatever strikes your fancy.