Tips on Creating a Descendant Wall Chart

Using RM9 and Windows 10-I have 300 descendants to print. The chart, if printed, would be 15 feet wide!! Difficult to see on my screen what the final product would be. I’d like a suggestion such as: If you have 300 descendants with only b.m and d info here’s the recommendation on all the sizes, box size, etc.
Use fit to chart Y or N. Need tips… why lots of white space?. Children not showing up near parents. HELP!!!.

Faulty program. Reportedly caused when someone has more than one spouse but I doubt that’s the only problem.