character limit

[A-Man]

Only 10 BMPs per .dat file. Combining sheets would make things worse. You could instead try to split them, but that might not be applicable for BMPs per .dat limit. Put in mind also that there is some limit to the amount of .BMPs you can have LF2 load in general (does not relate to their numbers, but to their combined size I believe). If you're stuck with the above, then you may resort to the A-Grid Clipper.