360 Build for my wife Questions

It will be a strong engine with stock sized valves...they want low end bigger valves will make it cost more and not be cost effective

haha when i built my 340 i found a set of 2.02 X heads in the paper for $50 bucks. took them over to the machine shop to be dipped and checked, they were good to go. used the new springs for my new cam, i lapped the valves myself. i found that to be pretty friggin cost effective.