Yes. I already said.
Unrelated.Not caring about anything beside his targets doesn't lower his intelligence, but shows he is a cold-hearted, dangerous man.
Patience is unrelated.The ability to wait out things requires patience, especially with an attitude like Kiritsugu.
Does he? Rin realizes over an hour of lessons with him Shirou has a rare and dangerous method of Thaumaturgy where his turns his own nerves into circuits any time he casts, not with her own magical talent, but through questions. Kiritsugu didn't over almost 5 years of education.In my opinion Kiritsugu outsmarts Rin and should be placed around 130-135