It won't take long to fit them and swap stuff over. What shifters are you using?
Bar end, just like yours.
You're right, the job itself won't take long although I like to take my time taping the bars to make a nice job of it.
I plan to put my bike on the turbo so I can fiddle around with the set up, bar angles and brake lever position etc. Then I need to make sure I get fisik gel pads in the right place. This is the bit that will take the time - not something that can be rushed.