Pedigree Query

Wanting to pick brains. Just acquired a mare that will be bred for a "breed to race" foal in Indiana. Not opposed to going outside the state realizing it will not be eligible for the sired races, but that's OK.
Her name is Royal Knockout by Fit To Fight out of Princess Winki. She's a maiden with great conformation, not super tall, but very correct with probably an overabundance of muscling. Almost looks like a QH. A rear leg and hip carry down to die for. Rear propulsion will not be an issue with this mare. Any opinions or suggestions?
Thanks in advance.

Since your filly is unraced and 4x4 Bold Ruler, my suggestion would be to consider Moro Oro. Ninety (90%) starters from foals is truly amazing today. MO has done well with Nasrullah line broodmares so I would take a look at him.

Razor would give you inbreeding to a full sister to Nashua but he does not have the stats that Moro Oro has.