Ok, so I checked the blog after a millennium and I was pleasantly surprise to see that this project is still alive. So seeing as you want us to help you with sounds, I though I might throw in a few cents to try and help!
I made some quick & dirty sounds, however, I am not that good with my voice so do excuse me if it's not perfect. On the plus side though, this is recorded with a Blue Yeti Microphone so the quality should be pretty good.
I used Audacity to record and normalize the audio, I didn't mess with the pitch at all since I don't really know exactly how you want it.
I've Included all the audio files along with a Project file for Audacity so that you can go and change the pitch yourself. (not that the project files are necessary)