This design looks like it would make an excellent fast courier, assuming that much of the interior is engine space and it has limited cargo and crew space. Something fast and agile to evade capture while getting something or someone of high value to its destination.
It's nice...but doesn't work as a freighter. The far-offset cockpit of the Falcon is no whimsical quirk. It and similar craft were mainly propulsion units that latched to bulk cargo containers...with the mandible braces you lack.