Running power: What is possible?

On Monday I will look at a CBF600SA from 2007 with 92,000 kilometers. It is completely checkbook maintained with Honda and looks really flawless. Price is 3480 euros. Maybe there is still a bit of something negotiable. How much could the engine still be able to do with regular maintenance and maintenance? Would that also be possible for 200,000 km? Would a replacement engine then possibly be worthwhile and how much would such an exchange cost or would that be possible on its own? cost between 300-1000 euros and I think that I would be willing to pay if it was time for you to change the engine relatively easily with help. Know a car champion who would support me if it wasn’t so difficult. I am looking forward to answers and experience values!