I think you should make it at least 1 day per topic. I can surely give you a great introduction to business finance in one day. Even though some sort of support mechanism is needed so that you retain the material learned (say email support for 3 months or similar).

On another note, reading few VCs blog and how many of them try to teach basics of financial statements in their blogs, this seems to be enough of a problem that they would be very happy with founders taking a good course in finance.