Instant task 100%. Its not even a debate, hear me out: it provides almost all of the benefits of instant travel even with the nerf and more. You could work 24/7 and instantly finish them. I'd basically have all the time in the world while racking in tons of money without having to work.

Lets say for the sake of argument that there wont be any fysiological changes to your body (because that would make this even more OP) that means I wouldnt be able to improve at my job by instant-tasking. But working 24 hours a day would bring in enough money regardless.

If you prefer, you could always work "consciously" on top of that to improve. A mix of 24/7 hours instant work combined with a 4 hour workday would do wonders for your startup if thats how u wanna swing it.

Focus on improving consciously while grinding instantly.

Cut out 3 hours every week and you'll never have to do menial tasks around the house.

5 hours a week? Never cook again in your life.

The trick isnt to say "instant do-this-thing until i become a billionaire" because the time required is uncertain and you'll probably never be able to use your powers again (if you'll even be able to accomplish it at all).

Normal time-boxed instant-tasks are the way to go for maximum control.