No problem, I'm usually up late.
A dolly will only help move it. You still have to LIFT the body off the hive and set it on the dolly. And a dolly won't help much here, a wheelbarrow might work better.
A nuc can work. If you have to split, you can do it a bunch of ways. Most nucs are 'deep', so that's not as helpful if you have medium frames. Now if you have a 2-body tall hive and need to split, each body can be separated. You'll need a 'top' and a 'bottom' for the second one, but a piece of cardboard or plywood would work in an emergency. You may need to shuffle frames to spread brood, but you have 2 bodies to arrange them in. You'll want to give each more space, but that's not needed immediately. I've got a few nuc bodies, but I've never used them.
PS: I just had a thought. Beekeeping is going to disappear. Think about the "Idiocracy" movie. People in coming generations will lack the intellect to be capable to keep bees. If they're eating tide pods now, they won't be able to do this... Very sad. Can you see with all the questions you have how complex this can be?
PPS: I just read a thread on another forum where a lady got bees, lost them the first winter. Second winter, lost a second hive. This is her third winter, and she's excited that her third colony is still alive. I don't want you to be doing what she has done, let's get it right on the first try.