Need a plan - component selection for restoring 68 340 that runs on 91 oct

Its like watching an artist paint

And to answer the questions
I'm not stuck on FT pistons but didn't know where else to look. It is not a highway cruiser, it is for having fun with friends around town with the top down. I was planning on sticking with stock hyd lifters.
703 is one of the ones you quoted I think
226/234 @.50, .494/.513, 110/106