step 2; it's not the VANILLA image, but the COMBINED, you need. sorry I was writing from memory..

partitions: use the partitioning guide in Durango's emmcworkaround; actually if you already gone through that, your current partitions will be ok.
It makes sense do a
sudo gainroot
mount -t ext3 /dev/mmcblk1p2 /mnt
rm -rf /mnt/*
after the first boot, so the auto-optify works on an empty /home

step 4,
(set up connectivity; gprs or wifi)
sudo gainroot
swapon /dev/mmcblk1p3
apt-get update
apt-get install rootsh mc
mcedit /lib/udev/mmc_id

this is shell script that's called by udev to number the internal mmc/external sd
if will make sense when you open it, you just swap the numbering; so the external sd is numbered as mmcblk0 on next reboot; swap and /home will be mounted just fine; auto-optify will run
and most things should work.

--
it's only the partitioning guide you're going to use, from emmcworkaround; you should not to run any of the scripts except (if you want) the script that removes unneded packages (games/fonts)