For the last 3 weeks I have been using a weekly betting budget which is $1000 * 8% = $80.

I bet 2 days a week for Horses Wed/Sat and 3 days a week for Greyhounds Thurs/Fri/Sat.

For Horses there is between 5 and 6 races and for Greyhounds there is between 10 and 12 races.

How should I divide up my weekly betting budget.