Very bad idea. 4 Stories is not very high. Sure you could land on your head but... people have survived 30.000ft falls before. Jumping isnt really a good method in general. Its scary, you could regret it without the ability to back out, it will shock others, youre gonna make a huge mess, you could land on someone or a car so kill someone or destroy property...
I would advise against this method but if you really are set on it that badly, you would have to find a much higher building.
Also making the decision to CTB while intoxicated is a bad idea. I get that its for weakening SI, but a decision of this caliber is something you should only do while at sound mind.