Quench 318 with stock rods

I don't think you have anything to worry about running it as-is. The Comp has more overlap and I don't think you'll have any issue at all with any fuel. With the Lunati I think the quench you will have coupled with the aluminum head material will make it usable. You might need to take some care with the timing and carb setup, or perhaps run pump premium but you should still be ok.