I've been curious about this topic as I wait for my 300C. So you are saying that the table is narrower than the opening between the couches, so it doesn't have to be removed to raise the lower sofa bunk? Can the seat backs stay up to support the weight of the upper bunk? In other words, with the lower bunk converted to the twin sofas and table, you merely have to raise the sofa beds up to support the upper bunk, remove the pins, and then lower the assembly back down?
The one and only time we camped in a toy hauler (rented one in Oct to see how we liked it), we found it fairly easy for each of us to support a corner of the upper bunk, remove the pins, and lower it ourselves rather than mess with the lower bunk!
-steve