I'm ok on the point that D.IV is low. My goal is to go to D.III but in the actual conditions my team is absolutely not ready for D.III and doesn't have the economical possibility to be ready. This subject has already been discussed several times but I think the champion of a division who is pronoted should receive some money to help him being competitive the next season.
It's not the merchandise revenue (although yours is double the OPs), but the added cash from higher attendance and more cash from the TV games that is the main help.
Are u sure that in third division you get 212k from TV? O_o" I think is too much.