no one wants to read a personal statement that is a full one page with 0.3" margins. no one.
this is what i did, and it was safe:
in word, do times new roman 12, 1" margins all around. that will give you the end result of a readable, appropriately length'ed personal statement.
when you start pushing the limits, you will get interviewers that come upon a page full of text, and no one wants to sift through all of it
just cut...it...down....a bit