stroker distributor questions

The machine shop is nearing completion of my small block stroker and the question of what distributor i will be running came up.
My plan was to use a stock Mopar distributor kit with, chrome box, and Accel coil. The machine shop made the comment that this may not be the way to go, and it may need to be locked in full advance to get a good idle quality and best performance. Can someone explain what this means? The motor will consist of Indy/Edelbrock heads, comp solid 254/262@50 .576/.584 109LSA cam, approx 4500 converter, 4.10 gear, super victor intake, 1 3/4 headers, 11.5 CR
The only reason for the mopar dist kit is that i already have it from a previous small block.