13 years doing nails, I use hand files not electric
I can do a set in an hour but it is an almighty rush, that would also be clear not pink & white
I usually tell people to allow 1.5 hours then there's time for a cup of tea and a bit of chatter which makes for a nicer experience
In the earlier days it took longer but i would say to anyone starting out, don't worry about the time just do the best set of nails you can because THAT is what they will take away with them and THAT is what will get you recommendations and repeat business
Take the time to do everything properly, don't skimp on your prep, build a strong shape and finish it nicely , sod the clock lol
You'll speed up in time without even trying.