Welcome Tracy. I see that you've uploaded your book to MobileRead -- thank you for making it available for sampling. Since I'm a SF fan, I'm going to download it and give it a try. If I like it, you've definitely sold the rest of the series to me.
Now -- I have a Kindle, so the .prc version you've uploaded works very well for me. But, there are LOTS of Sony owners here and you even list Sony as your device, so I'm curious why you haven't uploaded your book in the Sony format. Are you dependent upon your publisher or technical support staff to do the conversions? If so, just point them to MobileRead to learn all about the *free* software that can be used to create the Sony books.