Are the squares in my graph paper too small?

I’m starting my first campaign with so friends of mine, and I think my graph paper is too small. I mean, 4 squares equals 1 inch so… Also the paper has 35 tiles in width. I’m using regular office-store graph paper. Could you say if my graph paper is good enough? Could you also recommend some more… friendly, graph paper for tabletop-roleplaying?