The push for wooden planes comes more with the heavy work than the finish work. If you do a lot of that, wooden tools are worth tracking down, but I would stick with tools with handles if you're going to do that (japanese tools work well for jack work, their intermediate planes lag in practical use a little bit on large cabinetry vs. a western plane for several reasons).
There is a learning curve with japanese tools, and the sharpening economy isn't quite the same with them as it is with western tools (i.e., there is no easy zip across the grinder and a couple of licks on the stone - when they wear, you work the primary bevel with a coarse stone, and if they take damage, same thing - it can take a fair chunk of time to get an iron back in good nick - 10 or 15 minutes - if it takes on some damage). They also have less clearance to work with, and setting a double iron on them isn't as convenient (which becomes significant if you start working figured wood).
All of that said, if you want to make a krenov plane, it doesn't take long. I don't personally understand the virtue of the design, other than that it's easy to make, but some others seem to like them.
Setup on japanese and other wooden planes is trivial once you have used them for a while. There are a lot of tutorials online that suggest an hour of time and constant conditioning, but that kind of stuff isn't really necessary for a plane dialed in. you might spend an hour on your first japanese plane, but my recent experience has been more like 10 minutes with a bed scraping tool.