I don't run in-line boards but I've been on many boats that do. Not trying to start the big board, little board argument again, but suffice it to say, I've been on many boats running in-line boards pulling cores and copper and that's one of the reasons I don't run in-line boards. (EDITORIAL NOTE) It's called sport fishing. You can buy all the dead fish at Strack and VanTil's you want way cheaper than trying to catch them on Lake Michigan and it's just as much fun as running in-line boards.
Theoretically, you ought to be able to run four long lines off each side in a canoe. Boat width won't have diddly to do with it. Realistically, I've been on very few "full sized" boats, meat-hunter boats that ran four per side and most of those trolled in one direction for about half the trip, made one giant turn and then trolled back for the next several hours.
Big board or small, my advice is to scale back. Pick the most likely to succeed options, employ them and don't worry about the "just in case" options.
I'm assuming you use the "shallowest/farthest" scenario and don't run a 200 copper inside a 300 copper.
On the other hand copper and lead core manufacturers love people like you!
The South End provides useful resources and discussion forums for those that fish The South End of Lake Michigan for Salmon, Steelhead, Perch, and Bass as well as elsewhere in the Region and Chicago area.