I clean and sanitise my lines and taps as part of process of cleaning and empty keg can be done in half an hour or less (15 minutes if you don't mess around. The bottling process used to take me upto 4 hours.I bottled for the best part of 30 years.
Ultimately used the brown PET bottles which are very light but do last.
I have never ever had a bottle infection despite only modest care in bottle washing.
I think the time element is over stated because some people become obsessive about sanitation of bottles.
For nearly 10 years I have been kegging & I prefer this method & the beer so produced.
But you do need to face the investment (second hand set up from an auction started me off) & you will still need to bottle 23-19=4 lites approx of beer. BTW you now need to sanitise both kegs & beer lines & this alone takes time & demands care.
Think twice & if you are short on $ maybe defer.
Otherwise good luck.
I was talking to a brewer last night and he bottles his batches in 40 minutes. Could have pushed me over with a feather lol