What do you want to reverse engineer on a small example VI whose diagram is even posted?
What you want to do is certainly possible but it will get a little more complicated than that single example program you dug up. This forum is literally plastered with posts where someone asks for one or more points of your list and gets help with it and with usually no feedback if they succeeded and never with an answer posting their own result.
So everybody like you starts again from scratch.
It’s not very complicated to do but definitely more work than wiring together a few blocks.
So what is your experience in LabVIEW? Why do you want to use LabVIEW for this? What other programming do you know?