Cameron,
I re-read this post.
There are days you say you make 8000.00 on a day. Is this Win bets or a combination of multiple types of betting?

If it's multiple, then which particular type of betting are you exempling, Win only or whatever.
If it's a Win only type of bet,s then here goes:
On a day where you make 8000.00, somewhere from there you are expecting a ,losing streak of 30, or wait till you lose 1500.00
If you made 8000.00, then keep going till you think the loosing streak will reoccur.
or, when you lose that 1500.00 limit you mention.
On 1000 races, how many days on average do you bet on, 1000 per day, or week ?
Cos 8000.00 per day * 7 days = lots !