If you're curious about the 3 number jet sizes, I'll try and help.
This is a direct quote from Mike Urich's Holley handbook. "In 1975 Holley developed a close-limit series of main jets in the standard size range of 30 to 74. This series was developed so flow could be more closely tailored to fit within emission requirements. These jets use the first two numbers to indicate flow range, such as 65 or 66, and a third number to indicate whether the jet flows toward the lean side (651) in the middle (652) , or rich (653)."
I personally think that 582"s on the primary side might be a little lean for your application.