[@Pathfinder]
I don't know in all honesty, but I'll put some perspective:

King Ghidorah was originally going to be 150 meters tall, towering over the two Pacific Rim Kaiju (Leatherback and Otachi) by twice their height. 

The heights were changed so that Ghidorah was only 100 meters, and the Pacific duo were changed accordingly. Similarly, Godzilla was reduced from 100 meters to 60 meters. Unless your character is larger than Ghidorah, I think you should be okay. 


Edit: [S]I'm totally not saying that everyone should be shorter than my blonde beast because I like having him as the tallest Kaiju... not at all...[/s]