I personally would keep it the way it is, but if you do decide to change sights, the rear dovetail can be opened up by your gunsmith for most current aftermarket sights. The front sight will however have to be replaced with a staked sight blade, as there is not enough meat on the slide for a dovetail. The barrel bushing is also a screw-in bushing and even a very shallow dovetail would cut into and through the bushing. I have repaired a few Hi-Power slides in the past where someone has tried to dovetail the front of the slide for new sights. Repairs are not cheap and neither is a new slide at over $400.
Dosn't matter what day of the week it is, the best day is the day with your finger on the trigger--jra