日本語 Japanese Ask Questions Thread 4

If you have a question about the language, ask it and fellow 4channers might see it and answer it for you.


Japanese Ask Questions Thread2
http://dis.4chan.org/read/lang/1206158123/1-40

Japanese Ask Questions Thread3
http://dis.4chan.org/read/lang/1267485093/1-40

I'm reading some very basic manga in hopes to increase my Japanese proficiency.  I've come across this phrase:

もうすぐなぞー

I believe the message is:
"Soon" or "We'll be there soon."

Am I on the right track?

I understand that ぞ is typically used by males to emphasizes one's own opinion.  I'm not entirely sure how to relate that to this sentence.

I've also come across this phrase:
おーつ

I believe it means "Oats" (オーツ) but I'm not sure why it's written in ひらがな instead of かたかな.