Hi Ken,
aren't the industrial blowers noisy? Then again I suppose any fan would be noisy. I was planning to have the exhaust fan go outside the house, but the intake be from the basement. We do get hot weather in Central Jersey so I would not want to have hot air coming into the room.
The negative pressure is also something I had not thought of and a good reason to have an intake to offset the pressure from the exhaust fan. I will give some thought to have a fan on the air inlet side as well.
claudio
Just put in a register on the basement side. That way you will get warm air in winter n cool during summer.