WOW if you are planning on using that amount i will give you somthing to try that i am doing right now not sure if it will be successful but atleast you have the money on hand,

Use about 10% of that bank say 5 grand.

Each raceday go through the race list and look for horses that are resuming select the ones that have a 30% or more win percentage and are aged between 4yo and 6yo and have had 10+ starts put 1% of you bank on each horse and back it for it's next 5 starts or until it wins.

Maintain a stable of about 30 horses.