If you like the lighter weight of the friction tuners (UPTs are notably heavier, more-so on smaller instruments), then you might consider switching to Pegheads instead. They look like old-school, wooden friction pegs, but are actually geared inside like the UPTs. For me, on a vintage instrument, I would likely go for them over UPTs for both function and form.
Regardless of which option you choose, whether you have a luthier do the work is up to your comfort level. It is pretty simple to ream the holes and install them yourself, but that might not be true for everyone. Also, a good reamer ain’t cheap! I opted for a nicer model that set me back around $120. But I know it’ll last my lifetime and it cuts through wood like butter, so I’m pretty happy with it as an investment.