Fuel Line Choice and size

Good evening all. Plugging away on my duster and getting to the fuel line and Carb combo.
Using a Magna Fuel Quick Star 300 pump which comes with #10 fittings. Not sure if #10 is overkill for fuel line though. Motor is a 340 with 10:1 w2 with a strip Dominator, 8 inch converter with a brake and 456's. Some street some track. Motor was dynoed with an old 750 DP and a new QF750 because I ran the Holley prior build and my builder had the QF. Both pulled just about the same at 500 plus HP. What are your thoughts on fuel line size and Carb selection?? Thanks all and enjoy the holidays!!!
Got any pictures of this beast? We'd love to see it.