I just have the exec_once line in my config.ini and I edit using emplode most of the time. However I'm not sure what mem to set aside - I still haven't got around to soldering the final address line for the extra RAM so it doesn't work perfectly.
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Rory
MkIIa, blue lit buttons, memory upgrade, 1Tb in Subaru Forester STi
MkII, 240Gb in Mark Lord dock
MkII, 80Gb SSD in dock