you dont need to write 10k, it doesnt matter, just say what your plans are and leave it at that...How much are people actually writing for the what are you doing if you are not in school next year question? I'm only using about 800 characters to say what I'm doing and they give you 10000! Just wondering.
on a side note i decided to note write the optional essay, i hope it doesnt hurt me...The way it was worded just made me feel like it truly was optional and it doesnt matter, that and I had nothing of true value to really say.