no need to contain imagex,
Win7PE SE already download imagex to tools folder so you can get it during build with a filecopy line,
here are lines to test:
DirMake,C:\1
FileCopy,%Tools%\%SourceArch%\imagex.exe,C:\1
modify the way that fits your plugin
if such plugin to be used with Gena, we have plugin/tool at
\Utils\"GetWaikTools"
that quickly downloads imagex etc. which can be used by your plugin....
I do not think this is the case here besides extra info won't hurt 
*
You can save your settings with
\Utils\"ScriptManager"
test to see how it work ;)
besides I strickly advice you to give an intro like:
Brief list of settings I use:
-
-
-
and here is ScriptManager file I made with these settings: atttached ;)
*+
also an additional guide to get "drive" bootable with extracted Pe would help the audiance...

(I guess by adding things to normal windows boot menu ;))
**+
in fact an overall step by step guide would be helpful to the audiance to reproduce easly

**
personal comment:
personally I use D:\Gena.iso & D:\Win7PESE_x86.iso bootup with grub4dos (added to C: Boot Menu) to restore image of my C: (win)
will use "Portable Finder CMD" to automatize in future ;) (backup image at D: )
using bootup with extracted pe like you did always made me a bit feel unsafe since files are open ready to be infected by somethings.....
still advantageous with faster bootup (no ram need

) but as I wrote I feel safer everything inside .iso ;)
Your method of "Recovery Partition" I feel a
hidden partition,
that has Win7PE SE (not "In Ram" but "Normal") which boots up via boot menu of os (via grub4dos or maybe direct... whatever),
after boot automating "restore image" with imagex, sound to me a verrrry good idea

I know this would help many none-tech pc users restore easly and happly after (frequently

) system crashes badly..
***
ps:
on your tutorial - guide,
if you advice and show how to move profile to
D:\Users\<BlaBla>
life would be even easier to anyone who restore, having all personal files at desktop

I know this can be done with a single batch having D: available ;) , with "run batch" and "restart "
this is sadly not used widely, but besides I advice my friends to keep all personals at desktop where I had made this setting, which is very helpful when they restore each some months....
Sorry for loooong reply, I hope above helps on your preparations
