New pig- time to try all-Purina diet (KGB question)

[Shorty pigs]

KGB-
We added one white gilt today and only have 74 days until the show. Minimum weight is 220. She weighs about 100 lbs, has moderate to large frame, good muscling, and seems to be very sound and moves well. I know nothing about her (DOB, origin, what feed she had been on, etc) but she is young and raw. I have very little money invested in her, so I'd like to try something different and go 100% purina with her and see how it works out. I started her on 709 today with a few grotes and about 4 oz of purina calf milk replacer (because she didn't go to feed well)

Ill worm her tomorrow with Safegard paste. She doesn't seem to have any respiratory issues.

I'd like to see how well we can do with an all-Purina diet as my local Purina dealer is my favorite feed store, but I've always fed other brands. If you'll help me come up a plan, I'll go with it. Thanks. .