I suggest using
PDFRead, it does the PDF to JPG conversion for you and has options like making each PDF page into several images. I don't think it adds a TOC, although in principle it could if there was one in the PDF.
There isn't unfortunately a really satisfactory PDF to MOBI (or any reflowable ebook format) utility at present. You could try
calibre 0.6 beta, because at least if this does not center the images you can file a bug report and it will get fixed (MOBI does not center images by default). Calibre uses a different PDF to HTML utility under the hood than MobiPocket Creator does, so the result may be different (although in general not better).