My Dart Swinger Project!

Cool not that I would actually try that but it sounds like a cool project lol.
I have been doing some research and weighing my options and kinda looking at the cost aspect of doing my engine in different ways. I have a few questions about the machine work part of it. I was punching some numbers just to see where i could get my compression. Using speedpro pistons 1.755 height. That puts me .065 below the deck. If I was to mill .030 of the deck and .030 of my heads (putting me at 59cc) using a felpro .040 headgasket. That would put me at 9.8:1 scr. And that is a .040 over bore. Here come the questions
1) removing. 060 would that require new pushrods?
2) could I run on pump gas (any and all grades) with that cr?
3) would milling .060 create a valve to piston clearance problem with the .454 lift cam?
There was more but I cant remember now i will ask when it comes back to me. I may start a new thread with these questions but I will wait for now. Thanks guys