For the font and size, ideally you should be using either Times New Roman, font size 12, or Arial, font size 10. It's easier on the eyes and agents and publishers prefer it this way when submitting a manuscript. It's hard to tell. We don't know if you've done the correct spacing or done a gap between paragraphs, etc. You shouldn't be asking yourself what have you done so far and if it's good (as in the word count) you should just set yourself an overall target and aim for it. If you want to figure out an average word count that you should be aiming for then do this. Find five novels from the same genre as yours; each their first. Find the word count for them and add them up before dividing by five. That way, you know how many words you should be aiming for.