You will always get different variations and opinions on a build.Find someone with hemi experience and discuss your goals and parts on hand and expectations.Gather all the information for the intended combination,choose the correct parts and spend the money for the right parts and spend it once.Many times someone will start a build and get too many opinions and buy and build a engine changing things many times and not get the results and end up with a lot of extra parts and expense.
Get a solid game plan and stick with it.A good basic plan for a 4.500 bore is to build at minimum a 528" using a 4.150 crank.