Tyres are tested to about twice the stated max psi so don't worry about over inflating but i always think it's a balancing between speed and comfort and i like to feel my tyres flexing under me and soaking up the bumps. I'm 6'3" and i'm gradually changing all my road tyres to wider ones, typically changing from 23c to 25c, the new thinking as i understand it is that there is no speed penalty with making this change and a definate grip, safety and comfort benefit. On the pump question i can recommend anything by Lezyne, i'm using a steel drive at the moment and it's fantastic.