We've turning it over by putting pressure on the fan which slipped and spun the water pump (so we know that isn't locked up). We also tried putting a pipe wrench on the harmonic balancer and put a pipe on the wrench and tried that but we ended up breaking the wrench (it was a cheap one off Amazon I think). I was a little wary of that because I didn't want to force anything too much.
We don't have jacks or jackstands yet because this our first project. Also, it is on grass so most likely it will end up sinking into the ground. It it was on pavement, I would've got jacks and stands and tried the flywheel.
We ordered a chain wrench and we'll try that once it arrives.
About the will it run videos, I'm definitely aware that some of them can be a pretty bad idea. Seeing as this is my first project and I don't want to mess anything up too bad, I'm taking it slow and reading up on things before I try tackling it.
Thank you for the advice, I'll keep you posted.