Well yesterday I finished my last expansion and cleared out all foliage, rocks, and lava pools. The last expansion only cost 3 million coins and took 64 maps.
I already achieved my only other goal of getting 100M coin (which I then spent almost 70M on clearing up everything in one motion). I also have gotten every single rare monster and two of three unobtainable monsters, so I now have nothing left to do in Monster Story. Because of this I guess I am going to stop playing it, no point any more. So to all of my neighbors I fully understand if you wish to remove me (my in game name is 'Jurassic Park'), and thank you for all the gold and mystic maps.