Using my laptop as a computer case

Hi

I’m planning to buy gaming monitor and a keyboard, connect them to my gaming laptop and use it as a computer case to run CS GO on it, has anyone ever done this? Any recommendations? Is it even a good idea? If u know anything that could help me, feel free to say!

My friend told me there might be a delay on it and apparently I need to use a mini display wire!

There won’t be any problems unless you are pro gamer who cares about all the frames.
This is done by many people but there is will be a slight drop in performance.

DOnt hacve much sense. I think is a bad waste of money