Fourth test - fail. Putting the test file on another computer doesn't work well, saving the test file on the working computer under a different name does.
Formatting errors on cells containing calculated data corrected - an error that should have been caught and corrected far earlier. Hopefully the modded test file will prevent any future occurances, if any, of this. Output still as expected - shouldn't be a problem throughout construction of the rest of the spreadsheet.
File size of the completed spreadsheet liable and expected to be larger than originally estimated - not a major problem at this time.
As these errors are caught and corrected, creation of the remaining pages shouldn't take up nearly as much time.
When all is considered, positive results, improved outlook. Could be worse.