Spokane to Seattle and back.

My wife and I live in Eastern Washington and own a fairly new Volvo 780. We are wondering if we could make a living hauling freight between those two locations. We’re getting tired of being on the road for five weeks at a time and are wondering if there is enough freight leaving Eastern Washington for the west side and vice versa to make that a winning proposition. We also have no interest in dealing with Snoqualmie Pass in the winter so this operation would only run from May through October. We do have a set of auto socks for emergencies. I’m thinking if things were timed right with cooperative and efficient shippers and receivers we could do two loads a day. The last thing I would want is to get stuck on the west side because there is no parking at night. We both have secret clearances and Hazmat endorsements but only have van experience.