Lol not one cup of coffee. I don't do over about 1g any more, but I do usually take propranolol when on caffeine in the 400mg-1g range. I generally try to rotate things out so I'm off BP meds (and everything except phenylpiracetam+selegiline+arginine) when I work out, then go heavy on nicotine/clonidine to boost HGH levels during acute recovery. Throw in low dose beta blockers whenever I take stims not in danger of causing adrenergic storm, and clonidine when I am.
Overall it works out quite nicely, I'm not tolerant/dependent on anything and in good enough shape to start marathon training once the weather gets nice enough. Managing a little hypertension+tachycardia from caffeine is probably a bit overboard, but it makes a world of difference on harder stims.