I've had some experience with the PDF part of your solution, but not the Power Point.
Attached is an FMGo solution for the PDF part of your sales-support solution. When you tap the button that says "Tap Here to View PDF", it opens the PDF in an iOS device's native PDF viewer.
PDF Viewer.fmp12.zip 569.1 K
After rereading your post, I started to focus on the aspect of opening conained PPTs & PDFs in the specific PowerPoint & PDF Reader apps. I have had no success with skipping the "choose/accept" iOS dialogue when trying to view PPTs (I gave this a try after my post above) & PDFs outside of FMGo.
If that is possible at this time, it would be very exciting. Best I've been able to do so far is skip the "view" dialgoue, and staying within the FMGo app as in the example I attached earlier.
I was successful getting this to work for PPTs much in the same way as for PDFs - though any special visual effects contained in a PPT are lost...it basically just lets you view a PPT as a plain old PDF. In any event, if you find the PDF solution helpful, I am happy to provide a PPT version for you as well.