Haha thanks xD
As for your question, usually it is, but it depends on the sentence. If the sentence is short enough, it doesn't need a comma, but in most cases, it does. Use your own judgment for that :P
You should apply sooner than later though, since ibo and fate will take forever to reply... Or I guess you could directly ask Great Sage, but idk about that process since Komodo kinda took care of that for me... but yea, if you have any questions, feel free to ask me :)