Is that viable for this game? Assuming it would save loads of time on text, but you'd have to memorize text boxes to laugh on for dolphin. Anywhere else that could be problematic?

Yes, all versions are allowed - that means NTSC-U, PAL and JP. We're not certain if any version has time saves on text, but JP probably does have some advantages. You would have to memorize the answers to the questions asked, but that's not too hard since they're always in the same spot.