Jet size recomendations please

[AZ59apacheguy]

Hi. I recently bought a Holley Truck Avenger 470CFM for my stock 283. The carb came with size 57 jets in both the Primary and Secondary metering blocks. Through research, I have found that 470cfm might be a little big for my engine, but should be fine if the carb is jetted correctly. I am in the middle of rebuilding the carb and don't want to button it up untill I get a good starting point on the correct jet size for my application. The person I got this from said it was on a 302 and ran great! What you all think about the 57 jet size I have now, would there be a size better suited to start with? Thanks