Holley 770 jet sizes on 440

I recently installed a wideband O2 sensor and gauge on the car. The motor is a 73 440 with headers, 3"exhaust, mild cam, aluminum intake and holley 770 street avenger with vac secondaries. So far I have #71 jets on the primary and #69 jets on the secondary. I'm seeing 12.3 to 12.6 during WOT runs. Does this all seem normal to you guys? It just seems like #69's are on the small side from what im seeing other people running. Trying to get ready for the track this weekend. Thanks for any input!