Is it safe to consume 4 pints of beer 12 hours after drimking 6 small mugs of coffee?

I had 6 small mugs of coffee around 10 am and im planning on drinking around 9:30pm. The thing is i still feel super wired and anxious (never consuming this much caffeine again) with cramps and im not gonna drink any more than 4 due to the fact that i cant afford it. I just dont wanna get really sick thats all. Im 230 lbs.