I start extending flaps around 17 miles out. FL1 takes a few seconds, and FL5 is the longest off all of them, around 1.5-2 minutes. So get configured. Even with FL5 you can do 250kts, but no ATC will have you fly that fast that close to the runway. FL10 when Localizer alive and set speed for FL10. At Glide Slope alive go to Gear Down, FL20, set speed. At Glide Slope intersection, FL25 or 30 ( what ever you like ), and set Vref+5 and Landing check.
ATC can assign you 170 kts to 3 or 5 mile final, so hold it, then don't forget to set Vref+5.