if you're going the short block way
yes machine work should be done, its imperative
checking the rings and piston bore also is imperative
why halfazz a job?
if you don't do these things that engine won't last 6 months to a year if you're lucky.

i tell you this, if my boss tried to make me half azz a job like that i'd flat out refuse to do it. Heck if i'd want that coming back on me down the road.