Bonie here is right... :)
Though, if you realky want to do it, then go.
But atleast have some protections like, sigils etc.. and have atleast a couple of banishing spells.
Though.. I'd like you to know that not all demons are bad. They're like humans who has free will to be bad or good. An experienced one said. And also based on my experience with one.
Another thing is, if you don't know what you want to summon, then probably you're still not ready.
I'm not saying not to do it but, decide what you want to summon, study what it's like, it's weaknesses.. etc. Then do it.
If I say: Don't do it! Your 'middle dragon' will die.., (lol) and you still want to do it, no one can stop you except the Universe.
Best of luck on your summoning.. :)