Okay, so someone suggested I should create a thread about scaling stages. okay, let's get started:
Requirements:
BrawlBox(possibly the latest verson):
http://forums.kc-mm.com/Gallery/BrawlView.php?Number=207903Stage Base(the stage you are working off of)
Alright, here's how to do it:
Step 1: Open up BrawlBox and choose a stage to use and scale, and right-click the model
Step 2: View it
Step 3: Find the main animation the stage uses, find the main bone, and look for the numbers next to scale:
Step 4: Change the number to whatever size:
Step 5: Open collisions box:
Step 6: Edit collisions(I haven't reached here yet, but this is NEEDED when scaling the stage, or the characters will go through the ground.
Step 7: Save and test in-game.
I hope this helps.

I will update this thread with a sample of my scaled final destination and more info.