We are just finishing our home... We have hardwood floors thoughout.. The best way according to all the professionals is to lay the hardwood perpendicular to the floor joists. I thought I would like the wood running away from me when I came in the door. It goes across instead.. I have one hall way that runs in one direction, another runs the other way.. so one has the wood going across, and the other the long way.. It's fine.. Hardwood looks wonderful and I'm very happy I chose to put it in the standard direction. Don't worry.. you're going to love it!

A is the standard way it would lay and elongate the rooms. B would take more material and cut the rooms short and there would be more small cut pieces to lay.

You could also get creative and angle it or lay it in A Boston Commons design. Lovely but complicated and expensive due to the amount of waste in cutting material.

My house is done the plan A way.

What ever you do, you will love wood floors!
peace