I think there's every reason to keep the BD as the main source for this project. Though the colours are different to what I'm used to from my laserdisc from the 90s, there's no denying the superior detail and clarity of the Blu-ray transfer.
While an uncensored version of the Beethoven segment would be ideal, I wouldn't want it to trip up or delay the project.
Regarding my cover, my client is undecided about whether he wants the final series shared or not. He's usually good about these things, so he probably will.