I think it would be fun to do a embark with 100 dwarves, 150,000 points and all that. Take 50 military dwarves, full armor and weaponry, take some golems, turrets, pets, run embark everywhere and nano-fortress, embark on a 1x5 map with a fortress/castle...
Take the castle, which should take up all the space from east to west, but leave a lot of way north/south for armies to approach you.
Now station your golems, station your turrets, build siege engines, arbalests and trebuchets, firepits and traps, and enjoy the show.
Or take 100 dwarves, embark on a world where the dwarven civ is dead, and play the last of your kind, see how long you can survive.