Launch portable apps for MIME type

I wanted to be able to use Portable FireFox to launch uTorrent, Foxit Reader, and other such portable apps from my drive. First I found this:
https://portableapps.com/node/1629
but I didn't want to put a copy of every portable app in the firefox directory so I tried a few things and came up with this
assuming:
PortableApps
-\FirefoxPortable
--\App
---\firefox
----firefox.exe
-\Foxit Reader
--foxitreader.exe

1. Open PortableApps\FirefoxPortable\App\firefox directory
2. create a text file named PDF.cmd
3. edit the file to contain
start "..\Foxit Reader\FoxitReader.exe" %1
4. In PFF click on a pdf.
5. On the "opening foo.pdf" dialog check the do this always box and then select Open with and click browse
6. Browse to PortableApps\FirefoxPortable\App\firefox directory
7. Type in PDF.cmd and click ok
8. Edit PortableApps\FirefoxPortable\data\profile\mimeTypes.rdf
9. Find the following entry
NC:path="J:\PortableApps\FirefoxPortable\App\firefox\PDF.cmd"
and trim it to
NC:path="PDF.cmd"
10. Restart PFF and enjoy.

I know some of this seems crazy but it works.
-The reason for using cmd files is because ..\ is apparently not handled in the mimetype.rdf file.
-The reason for only ..\ instead of ..\..\..\ is because the process will be started from the FirefoxPortable dir not the firefox dir
-The reason to go though this hassle at all is to keep all the directories organized.

what do you think sirs?