It includes the bonus level to give some closure (but iI still want to see the train level or a sequel dammit!)
There was a save game editor to pick the skills for your ghosts in the old version... but I don't think it'll work on the gog version....
They whole point of the resource restriction was to make you think about where you spend your plasm.... if you are having difficulty however I can edit your save game to give you infinite gold plasm so that all ghosts can have all their abilities - which will be a big help....
Then remember to work up slowly until you have caused enough chaos to let loose your big scares.....
Also remember something like the dog or ghost set on roam... or the corridor ghosts set on low level murmurs or something is good to keep people on edge. - and be quick to act when a ghost is being banished..... that's it really.