Soo in general how much should one invest in Bitcoin should it be "how much you can easily invest without stress " or "as much as you can invest at all cost"
I would put in a moderate effort, and, in fact, I do. Investing in Bitcoin is one part of an overall wealth building plan, but in that part there is always room for spending. You have to maintain a balance between thinking about the future and living in the present.
In your specific case, if you want us to help you, it would be better to give more information, such as age, family situation, work situation, etc.
It is not the same if you are 50 years old and have dependents than if you are 25 years old and have just started a very well paid job.