If the crank is clean and not scored...have it micropolished and leave it standard size.
Have the rods resized with new quality bolts.
Most valve jobs are already 3 angle, if you want something special get 5 angle...the difference in performance will be negligable unless your running at the ragged edge. If your handy with a grinder pocket port the valve bowls, don't polish.
If the block is straight then leave it but have the cylinders bored and honed.
That's pretty much it?
“She may not look like much, but she's got it where it counts, kid. I've made a lot of special modifications myself.”
— Han Solo