Making a map just mountains is easy. Just set all terrain as mountain in the .map file. (The terrains won't look like mountains, but sinse you are just testing a theory, it should work), you can also use .map command to make yourself to start with the most provinces on the map.
As for the Acashic record, try this:
Code:
#selectspell "Acashic Record"
#researchlevel 0
#pathlevel 0 1
#fatiguecost 0
#end
That code makes Acashic Record researchlevel 0 and only to require 1 astral to cast. It also makes it free to cast.